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Merge pull request #19399 from karalabe/nuke-monitor

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cmd/geth, internal, node, vendor: nuke geth monitor
This commit is contained in:
Péter Szilágyi 2019-04-05 12:42:49 +03:00 committed by GitHub
commit ee376f6766
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202 changed files with 11577 additions and 55207 deletions
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2
cmd/geth/main.go
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@ -201,8 +201,6 @@ func init() {
copydbCommand, copydbCommand,
removedbCommand, removedbCommand,
dumpCommand, dumpCommand,
// See monitorcmd.go:
monitorCommand,
// See accountcmd.go: // See accountcmd.go:
accountCommand, accountCommand,
walletCommand, walletCommand,

351
cmd/geth/monitorcmd.go
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@ -1,351 +0,0 @@
// Copyright 2015 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"fmt"
"math"
"reflect"
"runtime"
"sort"
"strings"
"time"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/rpc"
"github.com/gizak/termui"
"gopkg.in/urfave/cli.v1"
)
var (
monitorCommandAttachFlag = cli.StringFlag{
Name: "attach",
Value: node.DefaultIPCEndpoint(clientIdentifier),
Usage: "API endpoint to attach to",
}
monitorCommandRowsFlag = cli.IntFlag{
Name: "rows",
Value: 5,
Usage: "Maximum rows in the chart grid",
}
monitorCommandRefreshFlag = cli.IntFlag{
Name: "refresh",
Value: 3,
Usage: "Refresh interval in seconds",
}
monitorCommand = cli.Command{
Action: utils.MigrateFlags(monitor), // keep track of migration progress
Name: "monitor",
Usage: "Monitor and visualize node metrics",
ArgsUsage: " ",
Category: "MONITOR COMMANDS",
Description: `
The Geth monitor is a tool to collect and visualize various internal metrics
gathered by the node, supporting different chart types as well as the capacity
to display multiple metrics simultaneously.
`,
Flags: []cli.Flag{
monitorCommandAttachFlag,
monitorCommandRowsFlag,
monitorCommandRefreshFlag,
},
}
)
// monitor starts a terminal UI based monitoring tool for the requested metrics.
func monitor(ctx *cli.Context) error {
var (
client *rpc.Client
err error
)
// Attach to an Ethereum node over IPC or RPC
endpoint := ctx.String(monitorCommandAttachFlag.Name)
if client, err = dialRPC(endpoint); err != nil {
utils.Fatalf("Unable to attach to geth node: %v", err)
}
defer client.Close()
// Retrieve all the available metrics and resolve the user pattens
metrics, err := retrieveMetrics(client)
if err != nil {
utils.Fatalf("Failed to retrieve system metrics: %v", err)
}
monitored := resolveMetrics(metrics, ctx.Args())
if len(monitored) == 0 {
list := expandMetrics(metrics, "")
sort.Strings(list)
if len(list) > 0 {
utils.Fatalf("No metrics specified.\n\nAvailable:\n - %s", strings.Join(list, "\n - "))
} else {
utils.Fatalf("No metrics collected by geth (--%s).\n", utils.MetricsEnabledFlag.Name)
}
}
sort.Strings(monitored)
if cols := len(monitored) / ctx.Int(monitorCommandRowsFlag.Name); cols > 6 {
utils.Fatalf("Requested metrics (%d) spans more that 6 columns:\n - %s", len(monitored), strings.Join(monitored, "\n - "))
}
// Create and configure the chart UI defaults
if err := termui.Init(); err != nil {
utils.Fatalf("Unable to initialize terminal UI: %v", err)
}
defer termui.Close()
rows := len(monitored)
if max := ctx.Int(monitorCommandRowsFlag.Name); rows > max {
rows = max
}
cols := (len(monitored) + rows - 1) / rows
for i := 0; i < rows; i++ {
termui.Body.AddRows(termui.NewRow())
}
// Create each individual data chart
footer := termui.NewPar("")
footer.Block.Border = true
footer.Height = 3
charts := make([]*termui.LineChart, len(monitored))
units := make([]int, len(monitored))
data := make([][]float64, len(monitored))
for i := 0; i < len(monitored); i++ {
charts[i] = createChart((termui.TermHeight() - footer.Height) / rows)
row := termui.Body.Rows[i%rows]
row.Cols = append(row.Cols, termui.NewCol(12/cols, 0, charts[i]))
}
termui.Body.AddRows(termui.NewRow(termui.NewCol(12, 0, footer)))
refreshCharts(client, monitored, data, units, charts, ctx, footer)
termui.Body.Align()
termui.Render(termui.Body)
// Watch for various system events, and periodically refresh the charts
termui.Handle("/sys/kbd/C-c", func(termui.Event) {
termui.StopLoop()
})
termui.Handle("/sys/wnd/resize", func(termui.Event) {
termui.Body.Width = termui.TermWidth()
for _, chart := range charts {
chart.Height = (termui.TermHeight() - footer.Height) / rows
}
termui.Body.Align()
termui.Render(termui.Body)
})
go func() {
tick := time.NewTicker(time.Duration(ctx.Int(monitorCommandRefreshFlag.Name)) * time.Second)
for range tick.C {
if refreshCharts(client, monitored, data, units, charts, ctx, footer) {
termui.Body.Align()
}
termui.Render(termui.Body)
}
}()
termui.Loop()
return nil
}
// retrieveMetrics contacts the attached geth node and retrieves the entire set
// of collected system metrics.
func retrieveMetrics(client *rpc.Client) (map[string]interface{}, error) {
var metrics map[string]interface{}
err := client.Call(&metrics, "debug_metrics", true)
return metrics, err
}
// resolveMetrics takes a list of input metric patterns, and resolves each to one
// or more canonical metric names.
func resolveMetrics(metrics map[string]interface{}, patterns []string) []string {
var res []string
for _, pattern := range patterns {
res = append(res, resolveMetric(metrics, pattern, "")...)
}
return res
}
// resolveMetrics takes a single of input metric pattern, and resolves it to one
// or more canonical metric names.
func resolveMetric(metrics map[string]interface{}, pattern string, path string) []string {
var results []string
// If a nested metric was requested, recurse optionally branching (via comma)
parts := strings.SplitN(pattern, "/", 2)
if len(parts) > 1 {
for _, variation := range strings.Split(parts[0], ",") {
submetrics, ok := metrics[variation].(map[string]interface{})
if !ok {
utils.Fatalf("Failed to retrieve system metrics: %s", path+variation)
return nil
}
results = append(results, resolveMetric(submetrics, parts[1], path+variation+"/")...)
}
return results
}
// Depending what the last link is, return or expand
for _, variation := range strings.Split(pattern, ",") {
switch metric := metrics[variation].(type) {
case float64:
// Final metric value found, return as singleton
results = append(results, path+variation)
case map[string]interface{}:
results = append(results, expandMetrics(metric, path+variation+"/")...)
default:
utils.Fatalf("Metric pattern resolved to unexpected type: %v", reflect.TypeOf(metric))
return nil
}
}
return results
}
// expandMetrics expands the entire tree of metrics into a flat list of paths.
func expandMetrics(metrics map[string]interface{}, path string) []string {
// Iterate over all fields and expand individually
var list []string
for name, metric := range metrics {
switch metric := metric.(type) {
case float64:
// Final metric value found, append to list
list = append(list, path+name)
case map[string]interface{}:
// Tree of metrics found, expand recursively
list = append(list, expandMetrics(metric, path+name+"/")...)
default:
utils.Fatalf("Metric pattern %s resolved to unexpected type: %v", path+name, reflect.TypeOf(metric))
return nil
}
}
return list
}
// fetchMetric iterates over the metrics map and retrieves a specific one.
func fetchMetric(metrics map[string]interface{}, metric string) float64 {
parts := strings.Split(metric, "/")
for _, part := range parts[:len(parts)-1] {
var found bool
metrics, found = metrics[part].(map[string]interface{})
if !found {
return 0
}
}
if v, ok := metrics[parts[len(parts)-1]].(float64); ok {
return v
}
return 0
}
// refreshCharts retrieves a next batch of metrics, and inserts all the new
// values into the active datasets and charts
func refreshCharts(client *rpc.Client, metrics []string, data [][]float64, units []int, charts []*termui.LineChart, ctx *cli.Context, footer *termui.Par) (realign bool) {
values, err := retrieveMetrics(client)
for i, metric := range metrics {
if len(data) < 512 {
data[i] = append([]float64{fetchMetric(values, metric)}, data[i]...)
} else {
data[i] = append([]float64{fetchMetric(values, metric)}, data[i][:len(data[i])-1]...)
}
if updateChart(metric, data[i], &units[i], charts[i], err) {
realign = true
}
}
updateFooter(ctx, err, footer)
return
}
// updateChart inserts a dataset into a line chart, scaling appropriately as to
// not display weird labels, also updating the chart label accordingly.
func updateChart(metric string, data []float64, base *int, chart *termui.LineChart, err error) (realign bool) {
dataUnits := []string{"", "K", "M", "G", "T", "E"}
timeUnits := []string{"ns", "µs", "ms", "s", "ks", "ms"}
colors := []termui.Attribute{termui.ColorBlue, termui.ColorCyan, termui.ColorGreen, termui.ColorYellow, termui.ColorRed, termui.ColorRed}
// Extract only part of the data that's actually visible
if chart.Width*2 < len(data) {
data = data[:chart.Width*2]
}
// Find the maximum value and scale under 1K
high := 0.0
if len(data) > 0 {
high = data[0]
for _, value := range data[1:] {
high = math.Max(high, value)
}
}
unit, scale := 0, 1.0
for high >= 1000 && unit+1 < len(dataUnits) {
high, unit, scale = high/1000, unit+1, scale*1000
}
// If the unit changes, re-create the chart (hack to set max height...)
if unit != *base {
realign, *base, *chart = true, unit, *createChart(chart.Height)
}
// Update the chart's data points with the scaled values
if cap(chart.Data) < len(data) {
chart.Data = make([]float64, len(data))
}
chart.Data = chart.Data[:len(data)]
for i, value := range data {
chart.Data[i] = value / scale
}
// Update the chart's label with the scale units
units := dataUnits
if strings.Contains(metric, "/Percentiles/") || strings.Contains(metric, "/pauses/") || strings.Contains(metric, "/time/") {
units = timeUnits
}
chart.BorderLabel = metric
if len(units[unit]) > 0 {
chart.BorderLabel += " [" + units[unit] + "]"
}
chart.LineColor = colors[unit] | termui.AttrBold
if err != nil {
chart.LineColor = termui.ColorRed | termui.AttrBold
}
return
}
// createChart creates an empty line chart with the default configs.
func createChart(height int) *termui.LineChart {
chart := termui.NewLineChart()
if runtime.GOOS == "windows" {
chart.Mode = "dot"
}
chart.DataLabels = []string{""}
chart.Height = height
chart.AxesColor = termui.ColorWhite
chart.PaddingBottom = -2
chart.BorderLabelFg = chart.BorderFg | termui.AttrBold
chart.BorderFg = chart.BorderBg
return chart
}
// updateFooter updates the footer contents based on any encountered errors.
func updateFooter(ctx *cli.Context, err error, footer *termui.Par) {
// Generate the basic footer
refresh := time.Duration(ctx.Int(monitorCommandRefreshFlag.Name)) * time.Second
footer.Text = fmt.Sprintf("Press Ctrl+C to quit. Refresh interval: %v.", refresh)
footer.TextFgColor = termui.ThemeAttr("par.fg") | termui.AttrBold
// Append any encountered errors
if err != nil {
footer.Text = fmt.Sprintf("Error: %v.", err)
footer.TextFgColor = termui.ColorRed | termui.AttrBold
}
}

5
internal/web3ext/web3ext.go
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@ -262,11 +262,6 @@ web3._extend({
name: 'chaindbCompact', name: 'chaindbCompact',
call: 'debug_chaindbCompact', call: 'debug_chaindbCompact',
}), }),
new web3._extend.Method({
name: 'metrics',
call: 'debug_metrics',
params: 1
}),
new web3._extend.Method({ new web3._extend.Method({
name: 'verbosity', name: 'verbosity',
call: 'debug_verbosity', call: 'debug_verbosity',

147
node/api.go
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@ -20,11 +20,9 @@ import (
"context" "context"
"fmt" "fmt"
"strings" "strings"
"time"
"github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/enode" "github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/rpc" "github.com/ethereum/go-ethereum/rpc"
@ -297,151 +295,6 @@ func (api *PublicAdminAPI) Datadir() string {
return api.node.DataDir() return api.node.DataDir()
} }
// PublicDebugAPI is the collection of debugging related API methods exposed over
// both secure and unsecure RPC channels.
type PublicDebugAPI struct {
node *Node // Node interfaced by this API
}
// NewPublicDebugAPI creates a new API definition for the public debug methods
// of the node itself.
func NewPublicDebugAPI(node *Node) *PublicDebugAPI {
return &PublicDebugAPI{node: node}
}
// Metrics retrieves all the known system metric collected by the node.
func (api *PublicDebugAPI) Metrics(raw bool) (map[string]interface{}, error) {
// Create a rate formatter
units := []string{"", "K", "M", "G", "T", "E", "P"}
round := func(value float64, prec int) string {
unit := 0
for value >= 1000 {
unit, value, prec = unit+1, value/1000, 2
}
return fmt.Sprintf(fmt.Sprintf("%%.%df%s", prec, units[unit]), value)
}
format := func(total float64, rate float64) string {
return fmt.Sprintf("%s (%s/s)", round(total, 0), round(rate, 2))
}
// Iterate over all the metrics, and just dump for now
counters := make(map[string]interface{})
metrics.DefaultRegistry.Each(func(name string, metric interface{}) {
// Create or retrieve the counter hierarchy for this metric
root, parts := counters, strings.Split(name, "/")
for _, part := range parts[:len(parts)-1] {
if _, ok := root[part]; !ok {
root[part] = make(map[string]interface{})
}
root = root[part].(map[string]interface{})
}
name = parts[len(parts)-1]
// Fill the counter with the metric details, formatting if requested
if raw {
switch metric := metric.(type) {
case metrics.Counter:
root[name] = map[string]interface{}{
"Overall": float64(metric.Count()),
}
case metrics.Meter:
root[name] = map[string]interface{}{
"AvgRate01Min": metric.Rate1(),
"AvgRate05Min": metric.Rate5(),
"AvgRate15Min": metric.Rate15(),
"MeanRate": metric.RateMean(),
"Overall": float64(metric.Count()),
}
case metrics.Timer:
root[name] = map[string]interface{}{
"AvgRate01Min": metric.Rate1(),
"AvgRate05Min": metric.Rate5(),
"AvgRate15Min": metric.Rate15(),
"MeanRate": metric.RateMean(),
"Overall": float64(metric.Count()),
"Percentiles": map[string]interface{}{
"5": metric.Percentile(0.05),
"20": metric.Percentile(0.2),
"50": metric.Percentile(0.5),
"80": metric.Percentile(0.8),
"95": metric.Percentile(0.95),
},
}
case metrics.ResettingTimer:
t := metric.Snapshot()
ps := t.Percentiles([]float64{5, 20, 50, 80, 95})
root[name] = map[string]interface{}{
"Measurements": len(t.Values()),
"Mean": t.Mean(),
"Percentiles": map[string]interface{}{
"5": ps[0],
"20": ps[1],
"50": ps[2],
"80": ps[3],
"95": ps[4],
},
}
default:
root[name] = "Unknown metric type"
}
} else {
switch metric := metric.(type) {
case metrics.Counter:
root[name] = map[string]interface{}{
"Overall": float64(metric.Count()),
}
case metrics.Meter:
root[name] = map[string]interface{}{
"Avg01Min": format(metric.Rate1()*60, metric.Rate1()),
"Avg05Min": format(metric.Rate5()*300, metric.Rate5()),
"Avg15Min": format(metric.Rate15()*900, metric.Rate15()),
"Overall": format(float64(metric.Count()), metric.RateMean()),
}
case metrics.Timer:
root[name] = map[string]interface{}{
"Avg01Min": format(metric.Rate1()*60, metric.Rate1()),
"Avg05Min": format(metric.Rate5()*300, metric.Rate5()),
"Avg15Min": format(metric.Rate15()*900, metric.Rate15()),
"Overall": format(float64(metric.Count()), metric.RateMean()),
"Maximum": time.Duration(metric.Max()).String(),
"Minimum": time.Duration(metric.Min()).String(),
"Percentiles": map[string]interface{}{
"5": time.Duration(metric.Percentile(0.05)).String(),
"20": time.Duration(metric.Percentile(0.2)).String(),
"50": time.Duration(metric.Percentile(0.5)).String(),
"80": time.Duration(metric.Percentile(0.8)).String(),
"95": time.Duration(metric.Percentile(0.95)).String(),
},
}
case metrics.ResettingTimer:
t := metric.Snapshot()
ps := t.Percentiles([]float64{5, 20, 50, 80, 95})
root[name] = map[string]interface{}{
"Measurements": len(t.Values()),
"Mean": time.Duration(t.Mean()).String(),
"Percentiles": map[string]interface{}{
"5": time.Duration(ps[0]).String(),
"20": time.Duration(ps[1]).String(),
"50": time.Duration(ps[2]).String(),
"80": time.Duration(ps[3]).String(),
"95": time.Duration(ps[4]).String(),
},
}
default:
root[name] = "Unknown metric type"
}
}
})
return counters, nil
}
// PublicWeb3API offers helper utils // PublicWeb3API offers helper utils
type PublicWeb3API struct { type PublicWeb3API struct {
stack *Node stack *Node

5
node/node.go
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@ -635,11 +635,6 @@ func (n *Node) apis() []rpc.API {
Namespace: "debug", Namespace: "debug",
Version: "1.0", Version: "1.0",
Service: debug.Handler, Service: debug.Handler,
}, {
Namespace: "debug",
Version: "1.0",
Service: NewPublicDebugAPI(n),
Public: true,
}, { }, {
Namespace: "web3", Namespace: "web3",
Version: "1.0", Version: "1.0",

8
vendor/github.com/dgrijalva/jwt-go/LICENSE generated vendored
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@ -1,8 +0,0 @@
Copyright (c) 2012 Dave Grijalva
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

97
vendor/github.com/dgrijalva/jwt-go/MIGRATION_GUIDE.md generated vendored
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@ -1,97 +0,0 @@
## Migration Guide from v2 -> v3
Version 3 adds several new, frequently requested features. To do so, it introduces a few breaking changes. We've worked to keep these as minimal as possible. This guide explains the breaking changes and how you can quickly update your code.
### `Token.Claims` is now an interface type
The most requested feature from the 2.0 verison of this library was the ability to provide a custom type to the JSON parser for claims. This was implemented by introducing a new interface, `Claims`, to replace `map[string]interface{}`. We also included two concrete implementations of `Claims`: `MapClaims` and `StandardClaims`.
`MapClaims` is an alias for `map[string]interface{}` with built in validation behavior. It is the default claims type when using `Parse`. The usage is unchanged except you must type cast the claims property.
The old example for parsing a token looked like this..
```go
if token, err := jwt.Parse(tokenString, keyLookupFunc); err == nil {
fmt.Printf("Token for user %v expires %v", token.Claims["user"], token.Claims["exp"])
}
```
is now directly mapped to...
```go
if token, err := jwt.Parse(tokenString, keyLookupFunc); err == nil {
claims := token.Claims.(jwt.MapClaims)
fmt.Printf("Token for user %v expires %v", claims["user"], claims["exp"])
}
```
`StandardClaims` is designed to be embedded in your custom type. You can supply a custom claims type with the new `ParseWithClaims` function. Here's an example of using a custom claims type.
```go
type MyCustomClaims struct {
User string
*StandardClaims
}
if token, err := jwt.ParseWithClaims(tokenString, &MyCustomClaims{}, keyLookupFunc); err == nil {
claims := token.Claims.(*MyCustomClaims)
fmt.Printf("Token for user %v expires %v", claims.User, claims.StandardClaims.ExpiresAt)
}
```
### `ParseFromRequest` has been moved
To keep this library focused on the tokens without becoming overburdened with complex request processing logic, `ParseFromRequest` and its new companion `ParseFromRequestWithClaims` have been moved to a subpackage, `request`. The method signatues have also been augmented to receive a new argument: `Extractor`.
`Extractors` do the work of picking the token string out of a request. The interface is simple and composable.
This simple parsing example:
```go
if token, err := jwt.ParseFromRequest(tokenString, req, keyLookupFunc); err == nil {
fmt.Printf("Token for user %v expires %v", token.Claims["user"], token.Claims["exp"])
}
```
is directly mapped to:
```go
if token, err := request.ParseFromRequest(req, request.OAuth2Extractor, keyLookupFunc); err == nil {
claims := token.Claims.(jwt.MapClaims)
fmt.Printf("Token for user %v expires %v", claims["user"], claims["exp"])
}
```
There are several concrete `Extractor` types provided for your convenience:
* `HeaderExtractor` will search a list of headers until one contains content.
* `ArgumentExtractor` will search a list of keys in request query and form arguments until one contains content.
* `MultiExtractor` will try a list of `Extractors` in order until one returns content.
* `AuthorizationHeaderExtractor` will look in the `Authorization` header for a `Bearer` token.
* `OAuth2Extractor` searches the places an OAuth2 token would be specified (per the spec): `Authorization` header and `access_token` argument
* `PostExtractionFilter` wraps an `Extractor`, allowing you to process the content before it's parsed. A simple example is stripping the `Bearer ` text from a header
### RSA signing methods no longer accept `[]byte` keys
Due to a [critical vulnerability](https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/), we've decided the convenience of accepting `[]byte` instead of `rsa.PublicKey` or `rsa.PrivateKey` isn't worth the risk of misuse.
To replace this behavior, we've added two helper methods: `ParseRSAPrivateKeyFromPEM(key []byte) (*rsa.PrivateKey, error)` and `ParseRSAPublicKeyFromPEM(key []byte) (*rsa.PublicKey, error)`. These are just simple helpers for unpacking PEM encoded PKCS1 and PKCS8 keys. If your keys are encoded any other way, all you need to do is convert them to the `crypto/rsa` package's types.
```go
func keyLookupFunc(*Token) (interface{}, error) {
// Don't forget to validate the alg is what you expect:
if _, ok := token.Method.(*jwt.SigningMethodRSA); !ok {
return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
}
// Look up key
key, err := lookupPublicKey(token.Header["kid"])
if err != nil {
return nil, err
}
// Unpack key from PEM encoded PKCS8
return jwt.ParseRSAPublicKeyFromPEM(key)
}
```

85
vendor/github.com/dgrijalva/jwt-go/README.md generated vendored
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@ -1,85 +0,0 @@
A [go](http://www.golang.org) (or 'golang' for search engine friendliness) implementation of [JSON Web Tokens](http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html)
[![Build Status](https://travis-ci.org/dgrijalva/jwt-go.svg?branch=master)](https://travis-ci.org/dgrijalva/jwt-go)
**BREAKING CHANGES:*** Version 3.0.0 is here. It includes _a lot_ of changes including a few that break the API. We've tried to break as few things as possible, so there should just be a few type signature changes. A full list of breaking changes is available in `VERSION_HISTORY.md`. See `MIGRATION_GUIDE.md` for more information on updating your code.
**NOTICE:** A vulnerability in JWT was [recently published](https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/). As this library doesn't force users to validate the `alg` is what they expected, it's possible your usage is effected. There will be an update soon to remedy this, and it will likey require backwards-incompatible changes to the API. In the short term, please make sure your implementation verifies the `alg` is what you expect.
## What the heck is a JWT?
JWT.io has [a great introduction](https://jwt.io/introduction) to JSON Web Tokens.
In short, it's a signed JSON object that does something useful (for example, authentication). It's commonly used for `Bearer` tokens in Oauth 2. A token is made of three parts, separated by `.`'s. The first two parts are JSON objects, that have been [base64url](http://tools.ietf.org/html/rfc4648) encoded. The last part is the signature, encoded the same way.
The first part is called the header. It contains the necessary information for verifying the last part, the signature. For example, which encryption method was used for signing and what key was used.
The part in the middle is the interesting bit. It's called the Claims and contains the actual stuff you care about. Refer to [the RFC](http://self-issued.info/docs/draft-jones-json-web-token.html) for information about reserved keys and the proper way to add your own.
## What's in the box?
This library supports the parsing and verification as well as the generation and signing of JWTs. Current supported signing algorithms are HMAC SHA, RSA, RSA-PSS, and ECDSA, though hooks are present for adding your own.
## Examples
See [the project documentation](https://godoc.org/github.com/dgrijalva/jwt-go) for examples of usage:
* [Simple example of parsing and validating a token](https://godoc.org/github.com/dgrijalva/jwt-go#example-Parse--Hmac)
* [Simple example of building and signing a token](https://godoc.org/github.com/dgrijalva/jwt-go#example-New--Hmac)
* [Directory of Examples](https://godoc.org/github.com/dgrijalva/jwt-go#pkg-examples)
## Extensions
This library publishes all the necessary components for adding your own signing methods. Simply implement the `SigningMethod` interface and register a factory method using `RegisterSigningMethod`.
Here's an example of an extension that integrates with the Google App Engine signing tools: https://github.com/someone1/gcp-jwt-go
## Compliance
This library was last reviewed to comply with [RTF 7519](http://www.rfc-editor.org/info/rfc7519) dated May 2015 with a few notable differences:
* In order to protect against accidental use of [Unsecured JWTs](http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html#UnsecuredJWT), tokens using `alg=none` will only be accepted if the constant `jwt.UnsafeAllowNoneSignatureType` is provided as the key.
## Project Status & Versioning
This library is considered production ready. Feedback and feature requests are appreciated. The API should be considered stable. There should be very few backwards-incompatible changes outside of major version updates (and only with good reason).
This project uses [Semantic Versioning 2.0.0](http://semver.org). Accepted pull requests will land on `master`. Periodically, versions will be tagged from `master`. You can find all the releases on [the project releases page](https://github.com/dgrijalva/jwt-go/releases).
While we try to make it obvious when we make breaking changes, there isn't a great mechanism for pushing announcements out to users. You may want to use this alternative package include: `gopkg.in/dgrijalva/jwt-go.v2`. It will do the right thing WRT semantic versioning.
## Usage Tips
### Signing vs Encryption
A token is simply a JSON object that is signed by its author. this tells you exactly two things about the data:
* The author of the token was in the possession of the signing secret
* The data has not been modified since it was signed
It's important to know that JWT does not provide encryption, which means anyone who has access to the token can read its contents. If you need to protect (encrypt) the data, there is a companion spec, `JWE`, that provides this functionality. JWE is currently outside the scope of this library.
### Choosing a Signing Method
There are several signing methods available, and you should probably take the time to learn about the various options before choosing one. The principal design decision is most likely going to be symmetric vs asymmetric.
Symmetric signing methods, such as HSA, use only a single secret. This is probably the simplest signing method to use since any `[]byte` can be used as a valid secret. They are also slightly computationally faster to use, though this rarely is enough to matter. Symmetric signing methods work the best when both producers and consumers of tokens are trusted, or even the same system. Since the same secret is used to both sign and validate tokens, you can't easily distribute the key for validation.
Asymmetric signing methods, such as RSA, use different keys for signing and verifying tokens. This makes it possible to produce tokens with a private key, and allow any consumer to access the public key for verification.
### JWT and OAuth
It's worth mentioning that OAuth and JWT are not the same thing. A JWT token is simply a signed JSON object. It can be used anywhere such a thing is useful. There is some confusion, though, as JWT is the most common type of bearer token used in OAuth2 authentication.
Without going too far down the rabbit hole, here's a description of the interaction of these technologies:
* OAuth is a protocol for allowing an identity provider to be separate from the service a user is logging in to. For example, whenever you use Facebook to log into a different service (Yelp, Spotify, etc), you are using OAuth.
* OAuth defines several options for passing around authentication data. One popular method is called a "bearer token". A bearer token is simply a string that _should_ only be held by an authenticated user. Thus, simply presenting this token proves your identity. You can probably derive from here why a JWT might make a good bearer token.
* Because bearer tokens are used for authentication, it's important they're kept secret. This is why transactions that use bearer tokens typically happen over SSL.
## More
Documentation can be found [on godoc.org](http://godoc.org/github.com/dgrijalva/jwt-go).
The command line utility included in this project (cmd/jwt) provides a straightforward example of token creation and parsing as well as a useful tool for debugging your own integration. You'll also find several implementation examples in to documentation.

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## `jwt-go` Version History
#### 3.0.0
* **Compatibility Breaking Changes**: See MIGRATION_GUIDE.md for tips on updating your code
* Dropped support for `[]byte` keys when using RSA signing methods. This convenience feature could contribute to security vulnerabilities involving mismatched key types with signing methods.
* `ParseFromRequest` has been moved to `request` subpackage and usage has changed
* The `Claims` property on `Token` is now type `Claims` instead of `map[string]interface{}`. The default value is type `MapClaims`, which is an alias to `map[string]interface{}`. This makes it possible to use a custom type when decoding claims.
* Other Additions and Changes
* Added `Claims` interface type to allow users to decode the claims into a custom type
* Added `ParseWithClaims`, which takes a third argument of type `Claims`. Use this function instead of `Parse` if you have a custom type you'd like to decode into.
* Dramatically improved the functionality and flexibility of `ParseFromRequest`, which is now in the `request` subpackage
* Added `ParseFromRequestWithClaims` which is the `FromRequest` equivalent of `ParseWithClaims`
* Added new interface type `Extractor`, which is used for extracting JWT strings from http requests. Used with `ParseFromRequest` and `ParseFromRequestWithClaims`.
* Added several new, more specific, validation errors to error type bitmask
* Moved examples from README to executable example files
* Signing method registry is now thread safe
* Added new property to `ValidationError`, which contains the raw error returned by calls made by parse/verify (such as those returned by keyfunc or json parser)
#### 2.7.0
This will likely be the last backwards compatible release before 3.0.0, excluding essential bug fixes.
* Added new option `-show` to the `jwt` command that will just output the decoded token without verifying
* Error text for expired tokens includes how long it's been expired
* Fixed incorrect error returned from `ParseRSAPublicKeyFromPEM`
* Documentation updates
#### 2.6.0
* Exposed inner error within ValidationError
* Fixed validation errors when using UseJSONNumber flag
* Added several unit tests
#### 2.5.0
* Added support for signing method none. You shouldn't use this. The API tries to make this clear.
* Updated/fixed some documentation
* Added more helpful error message when trying to parse tokens that begin with `BEARER `
#### 2.4.0
* Added new type, Parser, to allow for configuration of various parsing parameters
* You can now specify a list of valid signing methods. Anything outside this set will be rejected.
* You can now opt to use the `json.Number` type instead of `float64` when parsing token JSON
* Added support for [Travis CI](https://travis-ci.org/dgrijalva/jwt-go)
* Fixed some bugs with ECDSA parsing
#### 2.3.0
* Added support for ECDSA signing methods
* Added support for RSA PSS signing methods (requires go v1.4)
#### 2.2.0
* Gracefully handle a `nil` `Keyfunc` being passed to `Parse`. Result will now be the parsed token and an error, instead of a panic.
#### 2.1.0
Backwards compatible API change that was missed in 2.0.0.
* The `SignedString` method on `Token` now takes `interface{}` instead of `[]byte`
#### 2.0.0
There were two major reasons for breaking backwards compatibility with this update. The first was a refactor required to expand the width of the RSA and HMAC-SHA signing implementations. There will likely be no required code changes to support this change.
The second update, while unfortunately requiring a small change in integration, is required to open up this library to other signing methods. Not all keys used for all signing methods have a single standard on-disk representation. Requiring `[]byte` as the type for all keys proved too limiting. Additionally, this implementation allows for pre-parsed tokens to be reused, which might matter in an application that parses a high volume of tokens with a small set of keys. Backwards compatibilty has been maintained for passing `[]byte` to the RSA signing methods, but they will also accept `*rsa.PublicKey` and `*rsa.PrivateKey`.
It is likely the only integration change required here will be to change `func(t *jwt.Token) ([]byte, error)` to `func(t *jwt.Token) (interface{}, error)` when calling `Parse`.
* **Compatibility Breaking Changes**
* `SigningMethodHS256` is now `*SigningMethodHMAC` instead of `type struct`
* `SigningMethodRS256` is now `*SigningMethodRSA` instead of `type struct`
* `KeyFunc` now returns `interface{}` instead of `[]byte`
* `SigningMethod.Sign` now takes `interface{}` instead of `[]byte` for the key
* `SigningMethod.Verify` now takes `interface{}` instead of `[]byte` for the key
* Renamed type `SigningMethodHS256` to `SigningMethodHMAC`. Specific sizes are now just instances of this type.
* Added public package global `SigningMethodHS256`
* Added public package global `SigningMethodHS384`
* Added public package global `SigningMethodHS512`
* Renamed type `SigningMethodRS256` to `SigningMethodRSA`. Specific sizes are now just instances of this type.
* Added public package global `SigningMethodRS256`
* Added public package global `SigningMethodRS384`
* Added public package global `SigningMethodRS512`
* Moved sample private key for HMAC tests from an inline value to a file on disk. Value is unchanged.
* Refactored the RSA implementation to be easier to read
* Exposed helper methods `ParseRSAPrivateKeyFromPEM` and `ParseRSAPublicKeyFromPEM`
#### 1.0.2
* Fixed bug in parsing public keys from certificates
* Added more tests around the parsing of keys for RS256
* Code refactoring in RS256 implementation. No functional changes
#### 1.0.1
* Fixed panic if RS256 signing method was passed an invalid key
#### 1.0.0
* First versioned release
* API stabilized
* Supports creating, signing, parsing, and validating JWT tokens
* Supports RS256 and HS256 signing methods

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package jwt
import (
"crypto/subtle"
"fmt"
"time"
)
// For a type to be a Claims object, it must just have a Valid method that determines
// if the token is invalid for any supported reason
type Claims interface {
Valid() error
}
// Structured version of Claims Section, as referenced at
// https://tools.ietf.org/html/rfc7519#section-4.1
// See examples for how to use this with your own claim types
type StandardClaims struct {
Audience string `json:"aud,omitempty"`
ExpiresAt int64 `json:"exp,omitempty"`
Id string `json:"jti,omitempty"`
IssuedAt int64 `json:"iat,omitempty"`
Issuer string `json:"iss,omitempty"`
NotBefore int64 `json:"nbf,omitempty"`
Subject string `json:"sub,omitempty"`
}
// Validates time based claims "exp, iat, nbf".
// There is no accounting for clock skew.
// As well, if any of the above claims are not in the token, it will still
// be considered a valid claim.
func (c StandardClaims) Valid() error {
vErr := new(ValidationError)
now := TimeFunc().Unix()
// The claims below are optional, by default, so if they are set to the
// default value in Go, let's not fail the verification for them.
if c.VerifyExpiresAt(now, false) == false {
delta := time.Unix(now, 0).Sub(time.Unix(c.ExpiresAt, 0))
vErr.Inner = fmt.Errorf("token is expired by %v", delta)
vErr.Errors |= ValidationErrorExpired
}
if c.VerifyIssuedAt(now, false) == false {
vErr.Inner = fmt.Errorf("Token used before issued")
vErr.Errors |= ValidationErrorIssuedAt
}
if c.VerifyNotBefore(now, false) == false {
vErr.Inner = fmt.Errorf("token is not valid yet")
vErr.Errors |= ValidationErrorNotValidYet
}
if vErr.valid() {
return nil
}
return vErr
}
// Compares the aud claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (c *StandardClaims) VerifyAudience(cmp string, req bool) bool {
return verifyAud(c.Audience, cmp, req)
}
// Compares the exp claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (c *StandardClaims) VerifyExpiresAt(cmp int64, req bool) bool {
return verifyExp(c.ExpiresAt, cmp, req)
}
// Compares the iat claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (c *StandardClaims) VerifyIssuedAt(cmp int64, req bool) bool {
return verifyIat(c.IssuedAt, cmp, req)
}
// Compares the iss claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (c *StandardClaims) VerifyIssuer(cmp string, req bool) bool {
return verifyIss(c.Issuer, cmp, req)
}
// Compares the nbf claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (c *StandardClaims) VerifyNotBefore(cmp int64, req bool) bool {
return verifyNbf(c.NotBefore, cmp, req)
}
// ----- helpers
func verifyAud(aud string, cmp string, required bool) bool {
if aud == "" {
return !required
}
if subtle.ConstantTimeCompare([]byte(aud), []byte(cmp)) != 0 {
return true
} else {
return false
}
}
func verifyExp(exp int64, now int64, required bool) bool {
if exp == 0 {
return !required
}
return now <= exp
}
func verifyIat(iat int64, now int64, required bool) bool {
if iat == 0 {
return !required
}
return now >= iat
}
func verifyIss(iss string, cmp string, required bool) bool {
if iss == "" {
return !required
}
if subtle.ConstantTimeCompare([]byte(iss), []byte(cmp)) != 0 {
return true
} else {
return false
}
}
func verifyNbf(nbf int64, now int64, required bool) bool {
if nbf == 0 {
return !required
}
return now >= nbf
}

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// Package jwt is a Go implementation of JSON Web Tokens: http://self-issued.info/docs/draft-jones-json-web-token.html
//
// See README.md for more info.
package jwt

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package jwt
import (
"crypto"
"crypto/ecdsa"
"crypto/rand"
"errors"
"math/big"
)
var (
// Sadly this is missing from crypto/ecdsa compared to crypto/rsa
ErrECDSAVerification = errors.New("crypto/ecdsa: verification error")
)
// Implements the ECDSA family of signing methods signing methods
type SigningMethodECDSA struct {
Name string
Hash crypto.Hash
KeySize int
CurveBits int
}
// Specific instances for EC256 and company
var (
SigningMethodES256 *SigningMethodECDSA
SigningMethodES384 *SigningMethodECDSA
SigningMethodES512 *SigningMethodECDSA
)
func init() {
// ES256
SigningMethodES256 = &SigningMethodECDSA{"ES256", crypto.SHA256, 32, 256}
RegisterSigningMethod(SigningMethodES256.Alg(), func() SigningMethod {
return SigningMethodES256
})
// ES384
SigningMethodES384 = &SigningMethodECDSA{"ES384", crypto.SHA384, 48, 384}
RegisterSigningMethod(SigningMethodES384.Alg(), func() SigningMethod {
return SigningMethodES384
})
// ES512
SigningMethodES512 = &SigningMethodECDSA{"ES512", crypto.SHA512, 66, 521}
RegisterSigningMethod(SigningMethodES512.Alg(), func() SigningMethod {
return SigningMethodES512
})
}
func (m *SigningMethodECDSA) Alg() string {
return m.Name
}
// Implements the Verify method from SigningMethod
// For this verify method, key must be an ecdsa.PublicKey struct
func (m *SigningMethodECDSA) Verify(signingString, signature string, key interface{}) error {
var err error
// Decode the signature
var sig []byte
if sig, err = DecodeSegment(signature); err != nil {
return err
}
// Get the key
var ecdsaKey *ecdsa.PublicKey
switch k := key.(type) {
case *ecdsa.PublicKey:
ecdsaKey = k
default:
return ErrInvalidKeyType
}
if len(sig) != 2*m.KeySize {
return ErrECDSAVerification
}
r := big.NewInt(0).SetBytes(sig[:m.KeySize])
s := big.NewInt(0).SetBytes(sig[m.KeySize:])
// Create hasher
if !m.Hash.Available() {
return ErrHashUnavailable
}
hasher := m.Hash.New()
hasher.Write([]byte(signingString))
// Verify the signature
if verifystatus := ecdsa.Verify(ecdsaKey, hasher.Sum(nil), r, s); verifystatus == true {
return nil
} else {
return ErrECDSAVerification
}
}
// Implements the Sign method from SigningMethod
// For this signing method, key must be an ecdsa.PrivateKey struct
func (m *SigningMethodECDSA) Sign(signingString string, key interface{}) (string, error) {
// Get the key
var ecdsaKey *ecdsa.PrivateKey
switch k := key.(type) {
case *ecdsa.PrivateKey:
ecdsaKey = k
default:
return "", ErrInvalidKeyType
}
// Create the hasher
if !m.Hash.Available() {
return "", ErrHashUnavailable
}
hasher := m.Hash.New()
hasher.Write([]byte(signingString))
// Sign the string and return r, s
if r, s, err := ecdsa.Sign(rand.Reader, ecdsaKey, hasher.Sum(nil)); err == nil {
curveBits := ecdsaKey.Curve.Params().BitSize
if m.CurveBits != curveBits {
return "", ErrInvalidKey
}
keyBytes := curveBits / 8
if curveBits%8 > 0 {
keyBytes += 1
}
// We serialize the outpus (r and s) into big-endian byte arrays and pad
// them with zeros on the left to make sure the sizes work out. Both arrays
// must be keyBytes long, and the output must be 2*keyBytes long.
rBytes := r.Bytes()
rBytesPadded := make([]byte, keyBytes)
copy(rBytesPadded[keyBytes-len(rBytes):], rBytes)
sBytes := s.Bytes()
sBytesPadded := make([]byte, keyBytes)
copy(sBytesPadded[keyBytes-len(sBytes):], sBytes)
out := append(rBytesPadded, sBytesPadded...)
return EncodeSegment(out), nil
} else {
return "", err
}
}

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package jwt
import (
"crypto/ecdsa"
"crypto/x509"
"encoding/pem"
"errors"
)
var (
ErrNotECPublicKey = errors.New("Key is not a valid ECDSA public key")
ErrNotECPrivateKey = errors.New("Key is not a valid ECDSA private key")
)
// Parse PEM encoded Elliptic Curve Private Key Structure
func ParseECPrivateKeyFromPEM(key []byte) (*ecdsa.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
// Parse the key
var parsedKey interface{}
if parsedKey, err = x509.ParseECPrivateKey(block.Bytes); err != nil {
return nil, err
}
var pkey *ecdsa.PrivateKey
var ok bool
if pkey, ok = parsedKey.(*ecdsa.PrivateKey); !ok {
return nil, ErrNotECPrivateKey
}
return pkey, nil
}
// Parse PEM encoded PKCS1 or PKCS8 public key
func ParseECPublicKeyFromPEM(key []byte) (*ecdsa.PublicKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
// Parse the key
var parsedKey interface{}
if parsedKey, err = x509.ParsePKIXPublicKey(block.Bytes); err != nil {
if cert, err := x509.ParseCertificate(block.Bytes); err == nil {
parsedKey = cert.PublicKey
} else {
return nil, err
}
}
var pkey *ecdsa.PublicKey
var ok bool
if pkey, ok = parsedKey.(*ecdsa.PublicKey); !ok {
return nil, ErrNotECPublicKey
}
return pkey, nil
}

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package jwt
import (
"errors"
)
// Error constants
var (
ErrInvalidKey = errors.New("key is invalid")
ErrInvalidKeyType = errors.New("key is of invalid type")
ErrHashUnavailable = errors.New("the requested hash function is unavailable")
)
// The errors that might occur when parsing and validating a token
const (
ValidationErrorMalformed uint32 = 1 << iota // Token is malformed
ValidationErrorUnverifiable // Token could not be verified because of signing problems
ValidationErrorSignatureInvalid // Signature validation failed
// Standard Claim validation errors
ValidationErrorAudience // AUD validation failed
ValidationErrorExpired // EXP validation failed
ValidationErrorIssuedAt // IAT validation failed
ValidationErrorIssuer // ISS validation failed
ValidationErrorNotValidYet // NBF validation failed
ValidationErrorId // JTI validation failed
ValidationErrorClaimsInvalid // Generic claims validation error
)
// Helper for constructing a ValidationError with a string error message
func NewValidationError(errorText string, errorFlags uint32) *ValidationError {
return &ValidationError{
text: errorText,
Errors: errorFlags,
}
}
// The error from Parse if token is not valid
type ValidationError struct {
Inner error // stores the error returned by external dependencies, i.e.: KeyFunc
Errors uint32 // bitfield. see ValidationError... constants
text string // errors that do not have a valid error just have text
}
// Validation error is an error type
func (e ValidationError) Error() string {
if e.Inner != nil {
return e.Inner.Error()
} else if e.text != "" {
return e.text
} else {
return "token is invalid"
}
}
// No errors
func (e *ValidationError) valid() bool {
return e.Errors == 0
}

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package jwt
import (
"crypto"
"crypto/hmac"
"errors"
)
// Implements the HMAC-SHA family of signing methods signing methods
type SigningMethodHMAC struct {
Name string
Hash crypto.Hash
}
// Specific instances for HS256 and company
var (
SigningMethodHS256 *SigningMethodHMAC
SigningMethodHS384 *SigningMethodHMAC
SigningMethodHS512 *SigningMethodHMAC
ErrSignatureInvalid = errors.New("signature is invalid")
)
func init() {
// HS256
SigningMethodHS256 = &SigningMethodHMAC{"HS256", crypto.SHA256}
RegisterSigningMethod(SigningMethodHS256.Alg(), func() SigningMethod {
return SigningMethodHS256
})
// HS384
SigningMethodHS384 = &SigningMethodHMAC{"HS384", crypto.SHA384}
RegisterSigningMethod(SigningMethodHS384.Alg(), func() SigningMethod {
return SigningMethodHS384
})
// HS512
SigningMethodHS512 = &SigningMethodHMAC{"HS512", crypto.SHA512}
RegisterSigningMethod(SigningMethodHS512.Alg(), func() SigningMethod {
return SigningMethodHS512
})
}
func (m *SigningMethodHMAC) Alg() string {
return m.Name
}
// Verify the signature of HSXXX tokens. Returns nil if the signature is valid.
func (m *SigningMethodHMAC) Verify(signingString, signature string, key interface{}) error {
// Verify the key is the right type
keyBytes, ok := key.([]byte)
if !ok {
return ErrInvalidKeyType
}
// Decode signature, for comparison
sig, err := DecodeSegment(signature)
if err != nil {
return err
}
// Can we use the specified hashing method?
if !m.Hash.Available() {
return ErrHashUnavailable
}
// This signing method is symmetric, so we validate the signature
// by reproducing the signature from the signing string and key, then
// comparing that against the provided signature.
hasher := hmac.New(m.Hash.New, keyBytes)
hasher.Write([]byte(signingString))
if !hmac.Equal(sig, hasher.Sum(nil)) {
return ErrSignatureInvalid
}
// No validation errors. Signature is good.
return nil
}
// Implements the Sign method from SigningMethod for this signing method.
// Key must be []byte
func (m *SigningMethodHMAC) Sign(signingString string, key interface{}) (string, error) {
if keyBytes, ok := key.([]byte); ok {
if !m.Hash.Available() {
return "", ErrHashUnavailable
}
hasher := hmac.New(m.Hash.New, keyBytes)
hasher.Write([]byte(signingString))
return EncodeSegment(hasher.Sum(nil)), nil
}
return "", ErrInvalidKey
}

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package jwt
import (
"encoding/json"
"errors"
// "fmt"
)
// Claims type that uses the map[string]interface{} for JSON decoding
// This is the default claims type if you don't supply one
type MapClaims map[string]interface{}
// Compares the aud claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (m MapClaims) VerifyAudience(cmp string, req bool) bool {
aud, _ := m["aud"].(string)
return verifyAud(aud, cmp, req)
}
// Compares the exp claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (m MapClaims) VerifyExpiresAt(cmp int64, req bool) bool {
switch exp := m["exp"].(type) {
case float64:
return verifyExp(int64(exp), cmp, req)
case json.Number:
v, _ := exp.Int64()
return verifyExp(v, cmp, req)
}
return req == false
}
// Compares the iat claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (m MapClaims) VerifyIssuedAt(cmp int64, req bool) bool {
switch iat := m["iat"].(type) {
case float64:
return verifyIat(int64(iat), cmp, req)
case json.Number:
v, _ := iat.Int64()
return verifyIat(v, cmp, req)
}
return req == false
}
// Compares the iss claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (m MapClaims) VerifyIssuer(cmp string, req bool) bool {
iss, _ := m["iss"].(string)
return verifyIss(iss, cmp, req)
}
// Compares the nbf claim against cmp.
// If required is false, this method will return true if the value matches or is unset
func (m MapClaims) VerifyNotBefore(cmp int64, req bool) bool {
switch nbf := m["nbf"].(type) {
case float64:
return verifyNbf(int64(nbf), cmp, req)
case json.Number:
v, _ := nbf.Int64()
return verifyNbf(v, cmp, req)
}
return req == false
}
// Validates time based claims "exp, iat, nbf".
// There is no accounting for clock skew.
// As well, if any of the above claims are not in the token, it will still
// be considered a valid claim.
func (m MapClaims) Valid() error {
vErr := new(ValidationError)
now := TimeFunc().Unix()
if m.VerifyExpiresAt(now, false) == false {
vErr.Inner = errors.New("Token is expired")
vErr.Errors |= ValidationErrorExpired
}
if m.VerifyIssuedAt(now, false) == false {
vErr.Inner = errors.New("Token used before issued")
vErr.Errors |= ValidationErrorIssuedAt
}
if m.VerifyNotBefore(now, false) == false {
vErr.Inner = errors.New("Token is not valid yet")
vErr.Errors |= ValidationErrorNotValidYet
}
if vErr.valid() {
return nil
}
return vErr
}

52
vendor/github.com/dgrijalva/jwt-go/none.go generated vendored
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@ -1,52 +0,0 @@
package jwt
// Implements the none signing method. This is required by the spec
// but you probably should never use it.
var SigningMethodNone *signingMethodNone
const UnsafeAllowNoneSignatureType unsafeNoneMagicConstant = "none signing method allowed"
var NoneSignatureTypeDisallowedError error
type signingMethodNone struct{}
type unsafeNoneMagicConstant string
func init() {
SigningMethodNone = &signingMethodNone{}
NoneSignatureTypeDisallowedError = NewValidationError("'none' signature type is not allowed", ValidationErrorSignatureInvalid)
RegisterSigningMethod(SigningMethodNone.Alg(), func() SigningMethod {
return SigningMethodNone
})
}
func (m *signingMethodNone) Alg() string {
return "none"
}
// Only allow 'none' alg type if UnsafeAllowNoneSignatureType is specified as the key
func (m *signingMethodNone) Verify(signingString, signature string, key interface{}) (err error) {
// Key must be UnsafeAllowNoneSignatureType to prevent accidentally
// accepting 'none' signing method
if _, ok := key.(unsafeNoneMagicConstant); !ok {
return NoneSignatureTypeDisallowedError
}
// If signing method is none, signature must be an empty string
if signature != "" {
return NewValidationError(
"'none' signing method with non-empty signature",
ValidationErrorSignatureInvalid,
)
}
// Accept 'none' signing method.
return nil
}
// Only allow 'none' signing if UnsafeAllowNoneSignatureType is specified as the key
func (m *signingMethodNone) Sign(signingString string, key interface{}) (string, error) {
if _, ok := key.(unsafeNoneMagicConstant); ok {
return "", nil
}
return "", NoneSignatureTypeDisallowedError
}

131
vendor/github.com/dgrijalva/jwt-go/parser.go generated vendored
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@ -1,131 +0,0 @@
package jwt
import (
"bytes"
"encoding/json"
"fmt"
"strings"
)
type Parser struct {
ValidMethods []string // If populated, only these methods will be considered valid
UseJSONNumber bool // Use JSON Number format in JSON decoder
SkipClaimsValidation bool // Skip claims validation during token parsing
}
// Parse, validate, and return a token.
// keyFunc will receive the parsed token and should return the key for validating.
// If everything is kosher, err will be nil
func (p *Parser) Parse(tokenString string, keyFunc Keyfunc) (*Token, error) {
return p.ParseWithClaims(tokenString, MapClaims{}, keyFunc)
}
func (p *Parser) ParseWithClaims(tokenString string, claims Claims, keyFunc Keyfunc) (*Token, error) {
parts := strings.Split(tokenString, ".")
if len(parts) != 3 {
return nil, NewValidationError("token contains an invalid number of segments", ValidationErrorMalformed)
}
var err error
token := &Token{Raw: tokenString}
// parse Header
var headerBytes []byte
if headerBytes, err = DecodeSegment(parts[0]); err != nil {
if strings.HasPrefix(strings.ToLower(tokenString), "bearer ") {
return token, NewValidationError("tokenstring should not contain 'bearer '", ValidationErrorMalformed)
}
return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
}
if err = json.Unmarshal(headerBytes, &token.Header); err != nil {
return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
}
// parse Claims
var claimBytes []byte
token.Claims = claims
if claimBytes, err = DecodeSegment(parts[1]); err != nil {
return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
}
dec := json.NewDecoder(bytes.NewBuffer(claimBytes))
if p.UseJSONNumber {
dec.UseNumber()
}
// JSON Decode. Special case for map type to avoid weird pointer behavior
if c, ok := token.Claims.(MapClaims); ok {
err = dec.Decode(&c)
} else {
err = dec.Decode(&claims)
}
// Handle decode error
if err != nil {
return token, &ValidationError{Inner: err, Errors: ValidationErrorMalformed}
}
// Lookup signature method
if method, ok := token.Header["alg"].(string); ok {
if token.Method = GetSigningMethod(method); token.Method == nil {
return token, NewValidationError("signing method (alg) is unavailable.", ValidationErrorUnverifiable)
}
} else {
return token, NewValidationError("signing method (alg) is unspecified.", ValidationErrorUnverifiable)
}
// Verify signing method is in the required set
if p.ValidMethods != nil {
var signingMethodValid = false
var alg = token.Method.Alg()
for _, m := range p.ValidMethods {
if m == alg {
signingMethodValid = true
break
}
}
if !signingMethodValid {
// signing method is not in the listed set
return token, NewValidationError(fmt.Sprintf("signing method %v is invalid", alg), ValidationErrorSignatureInvalid)
}
}
// Lookup key
var key interface{}
if keyFunc == nil {
// keyFunc was not provided. short circuiting validation
return token, NewValidationError("no Keyfunc was provided.", ValidationErrorUnverifiable)
}
if key, err = keyFunc(token); err != nil {
// keyFunc returned an error
return token, &ValidationError{Inner: err, Errors: ValidationErrorUnverifiable}
}
vErr := &ValidationError{}
// Validate Claims
if !p.SkipClaimsValidation {
if err := token.Claims.Valid(); err != nil {
// If the Claims Valid returned an error, check if it is a validation error,
// If it was another error type, create a ValidationError with a generic ClaimsInvalid flag set
if e, ok := err.(*ValidationError); !ok {
vErr = &ValidationError{Inner: err, Errors: ValidationErrorClaimsInvalid}
} else {
vErr = e
}
}
}
// Perform validation
token.Signature = parts[2]
if err = token.Method.Verify(strings.Join(parts[0:2], "."), token.Signature, key); err != nil {
vErr.Inner = err
vErr.Errors |= ValidationErrorSignatureInvalid
}
if vErr.valid() {
token.Valid = true
return token, nil
}
return token, vErr
}

100
vendor/github.com/dgrijalva/jwt-go/rsa.go generated vendored
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@ -1,100 +0,0 @@
package jwt
import (
"crypto"
"crypto/rand"
"crypto/rsa"
)
// Implements the RSA family of signing methods signing methods
type SigningMethodRSA struct {
Name string
Hash crypto.Hash
}
// Specific instances for RS256 and company
var (
SigningMethodRS256 *SigningMethodRSA
SigningMethodRS384 *SigningMethodRSA
SigningMethodRS512 *SigningMethodRSA
)
func init() {
// RS256
SigningMethodRS256 = &SigningMethodRSA{"RS256", crypto.SHA256}
RegisterSigningMethod(SigningMethodRS256.Alg(), func() SigningMethod {
return SigningMethodRS256
})
// RS384
SigningMethodRS384 = &SigningMethodRSA{"RS384", crypto.SHA384}
RegisterSigningMethod(SigningMethodRS384.Alg(), func() SigningMethod {
return SigningMethodRS384
})
// RS512
SigningMethodRS512 = &SigningMethodRSA{"RS512", crypto.SHA512}
RegisterSigningMethod(SigningMethodRS512.Alg(), func() SigningMethod {
return SigningMethodRS512
})
}
func (m *SigningMethodRSA) Alg() string {
return m.Name
}
// Implements the Verify method from SigningMethod
// For this signing method, must be an rsa.PublicKey structure.
func (m *SigningMethodRSA) Verify(signingString, signature string, key interface{}) error {
var err error
// Decode the signature
var sig []byte
if sig, err = DecodeSegment(signature); err != nil {
return err
}
var rsaKey *rsa.PublicKey
var ok bool
if rsaKey, ok = key.(*rsa.PublicKey); !ok {
return ErrInvalidKeyType
}
// Create hasher
if !m.Hash.Available() {
return ErrHashUnavailable
}
hasher := m.Hash.New()
hasher.Write([]byte(signingString))
// Verify the signature
return rsa.VerifyPKCS1v15(rsaKey, m.Hash, hasher.Sum(nil), sig)
}
// Implements the Sign method from SigningMethod
// For this signing method, must be an rsa.PrivateKey structure.
func (m *SigningMethodRSA) Sign(signingString string, key interface{}) (string, error) {
var rsaKey *rsa.PrivateKey
var ok bool
// Validate type of key
if rsaKey, ok = key.(*rsa.PrivateKey); !ok {
return "", ErrInvalidKey
}
// Create the hasher
if !m.Hash.Available() {
return "", ErrHashUnavailable
}
hasher := m.Hash.New()
hasher.Write([]byte(signingString))
// Sign the string and return the encoded bytes
if sigBytes, err := rsa.SignPKCS1v15(rand.Reader, rsaKey, m.Hash, hasher.Sum(nil)); err == nil {
return EncodeSegment(sigBytes), nil
} else {
return "", err
}
}

126
vendor/github.com/dgrijalva/jwt-go/rsa_pss.go generated vendored
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@ -1,126 +0,0 @@
// +build go1.4
package jwt
import (
"crypto"
"crypto/rand"
"crypto/rsa"
)
// Implements the RSAPSS family of signing methods signing methods
type SigningMethodRSAPSS struct {
*SigningMethodRSA
Options *rsa.PSSOptions
}
// Specific instances for RS/PS and company
var (
SigningMethodPS256 *SigningMethodRSAPSS
SigningMethodPS384 *SigningMethodRSAPSS
SigningMethodPS512 *SigningMethodRSAPSS
)
func init() {
// PS256
SigningMethodPS256 = &SigningMethodRSAPSS{
&SigningMethodRSA{
Name: "PS256",
Hash: crypto.SHA256,
},
&rsa.PSSOptions{
SaltLength: rsa.PSSSaltLengthAuto,
Hash: crypto.SHA256,
},
}
RegisterSigningMethod(SigningMethodPS256.Alg(), func() SigningMethod {
return SigningMethodPS256
})
// PS384
SigningMethodPS384 = &SigningMethodRSAPSS{
&SigningMethodRSA{
Name: "PS384",
Hash: crypto.SHA384,
},
&rsa.PSSOptions{
SaltLength: rsa.PSSSaltLengthAuto,
Hash: crypto.SHA384,
},
}
RegisterSigningMethod(SigningMethodPS384.Alg(), func() SigningMethod {
return SigningMethodPS384
})
// PS512
SigningMethodPS512 = &SigningMethodRSAPSS{
&SigningMethodRSA{
Name: "PS512",
Hash: crypto.SHA512,
},
&rsa.PSSOptions{
SaltLength: rsa.PSSSaltLengthAuto,
Hash: crypto.SHA512,
},
}
RegisterSigningMethod(SigningMethodPS512.Alg(), func() SigningMethod {
return SigningMethodPS512
})
}
// Implements the Verify method from SigningMethod
// For this verify method, key must be an rsa.PublicKey struct
func (m *SigningMethodRSAPSS) Verify(signingString, signature string, key interface{}) error {
var err error
// Decode the signature
var sig []byte
if sig, err = DecodeSegment(signature); err != nil {
return err
}
var rsaKey *rsa.PublicKey
switch k := key.(type) {
case *rsa.PublicKey:
rsaKey = k
default:
return ErrInvalidKey
}
// Create hasher
if !m.Hash.Available() {
return ErrHashUnavailable
}
hasher := m.Hash.New()
hasher.Write([]byte(signingString))
return rsa.VerifyPSS(rsaKey, m.Hash, hasher.Sum(nil), sig, m.Options)
}
// Implements the Sign method from SigningMethod
// For this signing method, key must be an rsa.PrivateKey struct
func (m *SigningMethodRSAPSS) Sign(signingString string, key interface{}) (string, error) {
var rsaKey *rsa.PrivateKey
switch k := key.(type) {
case *rsa.PrivateKey:
rsaKey = k
default:
return "", ErrInvalidKeyType
}
// Create the hasher
if !m.Hash.Available() {
return "", ErrHashUnavailable
}
hasher := m.Hash.New()
hasher.Write([]byte(signingString))
// Sign the string and return the encoded bytes
if sigBytes, err := rsa.SignPSS(rand.Reader, rsaKey, m.Hash, hasher.Sum(nil), m.Options); err == nil {
return EncodeSegment(sigBytes), nil
} else {
return "", err
}
}

69
vendor/github.com/dgrijalva/jwt-go/rsa_utils.go generated vendored
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@ -1,69 +0,0 @@
package jwt
import (
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"errors"
)
var (
ErrKeyMustBePEMEncoded = errors.New("Invalid Key: Key must be PEM encoded PKCS1 or PKCS8 private key")
ErrNotRSAPrivateKey = errors.New("Key is not a valid RSA private key")
ErrNotRSAPublicKey = errors.New("Key is not a valid RSA public key")
)
// Parse PEM encoded PKCS1 or PKCS8 private key
func ParseRSAPrivateKeyFromPEM(key []byte) (*rsa.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
var parsedKey interface{}
if parsedKey, err = x509.ParsePKCS1PrivateKey(block.Bytes); err != nil {
if parsedKey, err = x509.ParsePKCS8PrivateKey(block.Bytes); err != nil {
return nil, err
}
}
var pkey *rsa.PrivateKey
var ok bool
if pkey, ok = parsedKey.(*rsa.PrivateKey); !ok {
return nil, ErrNotRSAPrivateKey
}
return pkey, nil
}
// Parse PEM encoded PKCS1 or PKCS8 public key
func ParseRSAPublicKeyFromPEM(key []byte) (*rsa.PublicKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
// Parse the key
var parsedKey interface{}
if parsedKey, err = x509.ParsePKIXPublicKey(block.Bytes); err != nil {
if cert, err := x509.ParseCertificate(block.Bytes); err == nil {
parsedKey = cert.PublicKey
} else {
return nil, err
}
}
var pkey *rsa.PublicKey
var ok bool
if pkey, ok = parsedKey.(*rsa.PublicKey); !ok {
return nil, ErrNotRSAPublicKey
}
return pkey, nil
}

35
vendor/github.com/dgrijalva/jwt-go/signing_method.go generated vendored
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@ -1,35 +0,0 @@
package jwt
import (
"sync"
)
var signingMethods = map[string]func() SigningMethod{}
var signingMethodLock = new(sync.RWMutex)
// Implement SigningMethod to add new methods for signing or verifying tokens.
type SigningMethod interface {
Verify(signingString, signature string, key interface{}) error // Returns nil if signature is valid
Sign(signingString string, key interface{}) (string, error) // Returns encoded signature or error
Alg() string // returns the alg identifier for this method (example: 'HS256')
}
// Register the "alg" name and a factory function for signing method.
// This is typically done during init() in the method's implementation
func RegisterSigningMethod(alg string, f func() SigningMethod) {
signingMethodLock.Lock()
defer signingMethodLock.Unlock()
signingMethods[alg] = f
}
// Get a signing method from an "alg" string
func GetSigningMethod(alg string) (method SigningMethod) {
signingMethodLock.RLock()
defer signingMethodLock.RUnlock()
if methodF, ok := signingMethods[alg]; ok {
method = methodF()
}
return
}

108
vendor/github.com/dgrijalva/jwt-go/token.go generated vendored
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@ -1,108 +0,0 @@
package jwt
import (
"encoding/base64"
"encoding/json"
"strings"
"time"
)
// TimeFunc provides the current time when parsing token to validate "exp" claim (expiration time).
// You can override it to use another time value. This is useful for testing or if your
// server uses a different time zone than your tokens.
var TimeFunc = time.Now
// Parse methods use this callback function to supply
// the key for verification. The function receives the parsed,
// but unverified Token. This allows you to use properties in the
// Header of the token (such as `kid`) to identify which key to use.
type Keyfunc func(*Token) (interface{}, error)
// A JWT Token. Different fields will be used depending on whether you're
// creating or parsing/verifying a token.
type Token struct {
Raw string // The raw token. Populated when you Parse a token
Method SigningMethod // The signing method used or to be used
Header map[string]interface{} // The first segment of the token
Claims Claims // The second segment of the token
Signature string // The third segment of the token. Populated when you Parse a token
Valid bool // Is the token valid? Populated when you Parse/Verify a token
}
// Create a new Token. Takes a signing method
func New(method SigningMethod) *Token {
return NewWithClaims(method, MapClaims{})
}
func NewWithClaims(method SigningMethod, claims Claims) *Token {
return &Token{
Header: map[string]interface{}{
"typ": "JWT",
"alg": method.Alg(),
},
Claims: claims,
Method: method,
}
}
// Get the complete, signed token
func (t *Token) SignedString(key interface{}) (string, error) {
var sig, sstr string
var err error
if sstr, err = t.SigningString(); err != nil {
return "", err
}
if sig, err = t.Method.Sign(sstr, key); err != nil {
return "", err
}
return strings.Join([]string{sstr, sig}, "."), nil
}
// Generate the signing string. This is the
// most expensive part of the whole deal. Unless you
// need this for something special, just go straight for
// the SignedString.
func (t *Token) SigningString() (string, error) {
var err error
parts := make([]string, 2)
for i, _ := range parts {
var jsonValue []byte
if i == 0 {
if jsonValue, err = json.Marshal(t.Header); err != nil {
return "", err
}
} else {
if jsonValue, err = json.Marshal(t.Claims); err != nil {
return "", err
}
}
parts[i] = EncodeSegment(jsonValue)
}
return strings.Join(parts, "."), nil
}
// Parse, validate, and return a token.
// keyFunc will receive the parsed token and should return the key for validating.
// If everything is kosher, err will be nil
func Parse(tokenString string, keyFunc Keyfunc) (*Token, error) {
return new(Parser).Parse(tokenString, keyFunc)
}
func ParseWithClaims(tokenString string, claims Claims, keyFunc Keyfunc) (*Token, error) {
return new(Parser).ParseWithClaims(tokenString, claims, keyFunc)
}
// Encode JWT specific base64url encoding with padding stripped
func EncodeSegment(seg []byte) string {
return strings.TrimRight(base64.URLEncoding.EncodeToString(seg), "=")
}
// Decode JWT specific base64url encoding with padding stripped
func DecodeSegment(seg string) ([]byte, error) {
if l := len(seg) % 4; l > 0 {
seg += strings.Repeat("=", 4-l)
}
return base64.URLEncoding.DecodeString(seg)
}

22
vendor/github.com/gizak/termui/LICENSE generated vendored
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@ -1,22 +0,0 @@
The MIT License (MIT)
Copyright (c) 2015 Zack Guo
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

151
vendor/github.com/gizak/termui/README.md generated vendored
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@ -1,151 +0,0 @@
# termui [![Build Status](https://travis-ci.org/gizak/termui.svg?branch=master)](https://travis-ci.org/gizak/termui) [![Doc Status](https://godoc.org/github.com/gizak/termui?status.png)](https://godoc.org/github.com/gizak/termui)
<img src="./_example/dashboard.gif" alt="demo cast under osx 10.10; Terminal.app; Menlo Regular 12pt.)" width="80%">
`termui` is a cross-platform, easy-to-compile, and fully-customizable terminal dashboard. It is inspired by [blessed-contrib](https://github.com/yaronn/blessed-contrib), but purely in Go.
Now version v2 has arrived! It brings new event system, new theme system, new `Buffer` interface and specific colour text rendering. (some docs are missing, but it will be completed soon!)
## Installation
`master` mirrors v2 branch, to install:
go get -u github.com/gizak/termui
It is recommanded to use locked deps by using [glide](https://glide.sh): move to `termui` src directory then run `glide up`.
For the compatible reason, you can choose to install the legacy version of `termui`:
go get gopkg.in/gizak/termui.v1
## Usage
### Layout
To use `termui`, the very first thing you may want to know is how to manage layout. `termui` offers two ways of doing this, known as absolute layout and grid layout.
__Absolute layout__
Each widget has an underlying block structure which basically is a box model. It has border, label and padding properties. A border of a widget can be chosen to hide or display (with its border label), you can pick a different front/back colour for the border as well. To display such a widget at a specific location in terminal window, you need to assign `.X`, `.Y`, `.Height`, `.Width` values for each widget before sending it to `.Render`. Let's demonstrate these by a code snippet:
`````go
import ui "github.com/gizak/termui" // <- ui shortcut, optional
func main() {
err := ui.Init()
if err != nil {
panic(err)
}
defer ui.Close()
p := ui.NewPar(":PRESS q TO QUIT DEMO")
p.Height = 3
p.Width = 50
p.TextFgColor = ui.ColorWhite
p.BorderLabel = "Text Box"
p.BorderFg = ui.ColorCyan
g := ui.NewGauge()
g.Percent = 50
g.Width = 50
g.Height = 3
g.Y = 11
g.BorderLabel = "Gauge"
g.BarColor = ui.ColorRed
g.BorderFg = ui.ColorWhite
g.BorderLabelFg = ui.ColorCyan
ui.Render(p, g) // feel free to call Render, it's async and non-block
// event handler...
}
`````
Note that components can be overlapped (I'd rather call this a feature...), `Render(rs ...Renderer)` renders its args from left to right (i.e. each component's weight is arising from left to right).
__Grid layout:__
<img src="./_example/grid.gif" alt="grid" width="60%">
Grid layout uses [12 columns grid system](http://www.w3schools.com/bootstrap/bootstrap_grid_system.asp) with expressive syntax. To use `Grid`, all we need to do is build a widget tree consisting of `Row`s and `Col`s (Actually a `Col` is also a `Row` but with a widget endpoint attached).
```go
import ui "github.com/gizak/termui"
// init and create widgets...
// build
ui.Body.AddRows(
ui.NewRow(
ui.NewCol(6, 0, widget0),
ui.NewCol(6, 0, widget1)),
ui.NewRow(
ui.NewCol(3, 0, widget2),
ui.NewCol(3, 0, widget30, widget31, widget32),
ui.NewCol(6, 0, widget4)))
// calculate layout
ui.Body.Align()
ui.Render(ui.Body)
```
### Events
`termui` ships with a http-like event mux handling system. All events are channeled up from different sources (typing, click, windows resize, custom event) and then encoded as universal `Event` object. `Event.Path` indicates the event type and `Event.Data` stores the event data struct. Add a handler to a certain event is easy as below:
```go
// handle key q pressing
ui.Handle("/sys/kbd/q", func(ui.Event) {
// press q to quit
ui.StopLoop()
})
ui.Handle("/sys/kbd/C-x", func(ui.Event) {
// handle Ctrl + x combination
})
ui.Handle("/sys/kbd", func(ui.Event) {
// handle all other key pressing
})
// handle a 1s timer
ui.Handle("/timer/1s", func(e ui.Event) {
t := e.Data.(ui.EvtTimer)
// t is a EvtTimer
if t.Count%2 ==0 {
// do something
}
})
ui.Loop() // block until StopLoop is called
```
### Widgets
Click image to see the corresponding demo codes.
[<img src="./_example/par.png" alt="par" type="image/png" width="45%">](https://github.com/gizak/termui/blob/master/_example/par.go)
[<img src="./_example/list.png" alt="list" type="image/png" width="45%">](https://github.com/gizak/termui/blob/master/_example/list.go)
[<img src="./_example/gauge.png" alt="gauge" type="image/png" width="45%">](https://github.com/gizak/termui/blob/master/_example/gauge.go)
[<img src="./_example/linechart.png" alt="linechart" type="image/png" width="45%">](https://github.com/gizak/termui/blob/master/_example/linechart.go)
[<img src="./_example/barchart.png" alt="barchart" type="image/png" width="45%">](https://github.com/gizak/termui/blob/master/_example/barchart.go)
[<img src="./_example/mbarchart.png" alt="barchart" type="image/png" width="45%">](https://github.com/gizak/termui/blob/master/_example/mbarchart.go)
[<img src="./_example/sparklines.png" alt="sparklines" type="image/png" width="45%">](https://github.com/gizak/termui/blob/master/_example/sparklines.go)
[<img src="./_example/table.png" alt="table" type="image/png" width="45%">](https://github.com/gizak/termui/blob/master/_example/table.go)
## GoDoc
[godoc](https://godoc.org/github.com/gizak/termui)
## TODO
- [x] Grid layout
- [x] Event system
- [x] Canvas widget
- [x] Refine APIs
- [ ] Focusable widgets
## Changelog
## License
This library is under the [MIT License](http://opensource.org/licenses/MIT)

149
vendor/github.com/gizak/termui/barchart.go generated vendored
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@ -1,149 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import "fmt"
// BarChart creates multiple bars in a widget:
/*
bc := termui.NewBarChart()
data := []int{3, 2, 5, 3, 9, 5}
bclabels := []string{"S0", "S1", "S2", "S3", "S4", "S5"}
bc.BorderLabel = "Bar Chart"
bc.Data = data
bc.Width = 26
bc.Height = 10
bc.DataLabels = bclabels
bc.TextColor = termui.ColorGreen
bc.BarColor = termui.ColorRed
bc.NumColor = termui.ColorYellow
*/
type BarChart struct {
Block
BarColor Attribute
TextColor Attribute
NumColor Attribute
Data []int
DataLabels []string
BarWidth int
BarGap int
CellChar rune
labels [][]rune
dataNum [][]rune
numBar int
scale float64
max int
}
// NewBarChart returns a new *BarChart with current theme.
func NewBarChart() *BarChart {
bc := &BarChart{Block: *NewBlock()}
bc.BarColor = ThemeAttr("barchart.bar.bg")
bc.NumColor = ThemeAttr("barchart.num.fg")
bc.TextColor = ThemeAttr("barchart.text.fg")
bc.BarGap = 1
bc.BarWidth = 3
bc.CellChar = ' '
return bc
}
func (bc *BarChart) layout() {
bc.numBar = bc.innerArea.Dx() / (bc.BarGap + bc.BarWidth)
bc.labels = make([][]rune, bc.numBar)
bc.dataNum = make([][]rune, len(bc.Data))
for i := 0; i < bc.numBar && i < len(bc.DataLabels) && i < len(bc.Data); i++ {
bc.labels[i] = trimStr2Runes(bc.DataLabels[i], bc.BarWidth)
n := bc.Data[i]
s := fmt.Sprint(n)
bc.dataNum[i] = trimStr2Runes(s, bc.BarWidth)
}
//bc.max = bc.Data[0] // what if Data is nil? Sometimes when bar graph is nill it produces panic with panic: runtime error: index out of range
// Asign a negative value to get maxvalue auto-populates
if bc.max == 0 {
bc.max = -1
}
for i := 0; i < len(bc.Data); i++ {
if bc.max < bc.Data[i] {
bc.max = bc.Data[i]
}
}
bc.scale = float64(bc.max) / float64(bc.innerArea.Dy()-1)
}
func (bc *BarChart) SetMax(max int) {
if max > 0 {
bc.max = max
}
}
// Buffer implements Bufferer interface.
func (bc *BarChart) Buffer() Buffer {
buf := bc.Block.Buffer()
bc.layout()
for i := 0; i < bc.numBar && i < len(bc.Data) && i < len(bc.DataLabels); i++ {
h := int(float64(bc.Data[i]) / bc.scale)
oftX := i * (bc.BarWidth + bc.BarGap)
barBg := bc.Bg
barFg := bc.BarColor
if bc.CellChar == ' ' {
barBg = bc.BarColor
barFg = ColorDefault
if bc.BarColor == ColorDefault { // the same as above
barBg |= AttrReverse
}
}
// plot bar
for j := 0; j < bc.BarWidth; j++ {
for k := 0; k < h; k++ {
c := Cell{
Ch: bc.CellChar,
Bg: barBg,
Fg: barFg,
}
x := bc.innerArea.Min.X + i*(bc.BarWidth+bc.BarGap) + j
y := bc.innerArea.Min.Y + bc.innerArea.Dy() - 2 - k
buf.Set(x, y, c)
}
}
// plot text
for j, k := 0, 0; j < len(bc.labels[i]); j++ {
w := charWidth(bc.labels[i][j])
c := Cell{
Ch: bc.labels[i][j],
Bg: bc.Bg,
Fg: bc.TextColor,
}
y := bc.innerArea.Min.Y + bc.innerArea.Dy() - 1
x := bc.innerArea.Min.X + oftX + k
buf.Set(x, y, c)
k += w
}
// plot num
for j := 0; j < len(bc.dataNum[i]); j++ {
c := Cell{
Ch: bc.dataNum[i][j],
Fg: bc.NumColor,
Bg: barBg,
}
if h == 0 {
c.Bg = bc.Bg
}
x := bc.innerArea.Min.X + oftX + (bc.BarWidth-len(bc.dataNum[i]))/2 + j
y := bc.innerArea.Min.Y + bc.innerArea.Dy() - 2
buf.Set(x, y, c)
}
}
return buf
}

240
vendor/github.com/gizak/termui/block.go generated vendored
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@ -1,240 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import "image"
// Hline is a horizontal line.
type Hline struct {
X int
Y int
Len int
Fg Attribute
Bg Attribute
}
// Vline is a vertical line.
type Vline struct {
X int
Y int
Len int
Fg Attribute
Bg Attribute
}
// Buffer draws a horizontal line.
func (l Hline) Buffer() Buffer {
if l.Len <= 0 {
return NewBuffer()
}
return NewFilledBuffer(l.X, l.Y, l.X+l.Len, l.Y+1, HORIZONTAL_LINE, l.Fg, l.Bg)
}
// Buffer draws a vertical line.
func (l Vline) Buffer() Buffer {
if l.Len <= 0 {
return NewBuffer()
}
return NewFilledBuffer(l.X, l.Y, l.X+1, l.Y+l.Len, VERTICAL_LINE, l.Fg, l.Bg)
}
// Buffer draws a box border.
func (b Block) drawBorder(buf Buffer) {
if !b.Border {
return
}
min := b.area.Min
max := b.area.Max
x0 := min.X
y0 := min.Y
x1 := max.X - 1
y1 := max.Y - 1
// draw lines
if b.BorderTop {
buf.Merge(Hline{x0, y0, x1 - x0, b.BorderFg, b.BorderBg}.Buffer())
}
if b.BorderBottom {
buf.Merge(Hline{x0, y1, x1 - x0, b.BorderFg, b.BorderBg}.Buffer())
}
if b.BorderLeft {
buf.Merge(Vline{x0, y0, y1 - y0, b.BorderFg, b.BorderBg}.Buffer())
}
if b.BorderRight {
buf.Merge(Vline{x1, y0, y1 - y0, b.BorderFg, b.BorderBg}.Buffer())
}
// draw corners
if b.BorderTop && b.BorderLeft && b.area.Dx() > 0 && b.area.Dy() > 0 {
buf.Set(x0, y0, Cell{TOP_LEFT, b.BorderFg, b.BorderBg})
}
if b.BorderTop && b.BorderRight && b.area.Dx() > 1 && b.area.Dy() > 0 {
buf.Set(x1, y0, Cell{TOP_RIGHT, b.BorderFg, b.BorderBg})
}
if b.BorderBottom && b.BorderLeft && b.area.Dx() > 0 && b.area.Dy() > 1 {
buf.Set(x0, y1, Cell{BOTTOM_LEFT, b.BorderFg, b.BorderBg})
}
if b.BorderBottom && b.BorderRight && b.area.Dx() > 1 && b.area.Dy() > 1 {
buf.Set(x1, y1, Cell{BOTTOM_RIGHT, b.BorderFg, b.BorderBg})
}
}
func (b Block) drawBorderLabel(buf Buffer) {
maxTxtW := b.area.Dx() - 2
tx := DTrimTxCls(DefaultTxBuilder.Build(b.BorderLabel, b.BorderLabelFg, b.BorderLabelBg), maxTxtW)
for i, w := 0, 0; i < len(tx); i++ {
buf.Set(b.area.Min.X+1+w, b.area.Min.Y, tx[i])
w += tx[i].Width()
}
}
// Block is a base struct for all other upper level widgets,
// consider it as css: display:block.
// Normally you do not need to create it manually.
type Block struct {
area image.Rectangle
innerArea image.Rectangle
X int
Y int
Border bool
BorderFg Attribute
BorderBg Attribute
BorderLeft bool
BorderRight bool
BorderTop bool
BorderBottom bool
BorderLabel string
BorderLabelFg Attribute
BorderLabelBg Attribute
Display bool
Bg Attribute
Width int
Height int
PaddingTop int
PaddingBottom int
PaddingLeft int
PaddingRight int
id string
Float Align
}
// NewBlock returns a *Block which inherits styles from current theme.
func NewBlock() *Block {
b := Block{}
b.Display = true
b.Border = true
b.BorderLeft = true
b.BorderRight = true
b.BorderTop = true
b.BorderBottom = true
b.BorderBg = ThemeAttr("border.bg")
b.BorderFg = ThemeAttr("border.fg")
b.BorderLabelBg = ThemeAttr("label.bg")
b.BorderLabelFg = ThemeAttr("label.fg")
b.Bg = ThemeAttr("block.bg")
b.Width = 2
b.Height = 2
b.id = GenId()
b.Float = AlignNone
return &b
}
func (b Block) Id() string {
return b.id
}
// Align computes box model
func (b *Block) Align() {
// outer
b.area.Min.X = 0
b.area.Min.Y = 0
b.area.Max.X = b.Width
b.area.Max.Y = b.Height
// float
b.area = AlignArea(TermRect(), b.area, b.Float)
b.area = MoveArea(b.area, b.X, b.Y)
// inner
b.innerArea.Min.X = b.area.Min.X + b.PaddingLeft
b.innerArea.Min.Y = b.area.Min.Y + b.PaddingTop
b.innerArea.Max.X = b.area.Max.X - b.PaddingRight
b.innerArea.Max.Y = b.area.Max.Y - b.PaddingBottom
if b.Border {
if b.BorderLeft {
b.innerArea.Min.X++
}
if b.BorderRight {
b.innerArea.Max.X--
}
if b.BorderTop {
b.innerArea.Min.Y++
}
if b.BorderBottom {
b.innerArea.Max.Y--
}
}
}
// InnerBounds returns the internal bounds of the block after aligning and
// calculating the padding and border, if any.
func (b *Block) InnerBounds() image.Rectangle {
b.Align()
return b.innerArea
}
// Buffer implements Bufferer interface.
// Draw background and border (if any).
func (b *Block) Buffer() Buffer {
b.Align()
buf := NewBuffer()
buf.SetArea(b.area)
buf.Fill(' ', ColorDefault, b.Bg)
b.drawBorder(buf)
b.drawBorderLabel(buf)
return buf
}
// GetHeight implements GridBufferer.
// It returns current height of the block.
func (b Block) GetHeight() int {
return b.Height
}
// SetX implements GridBufferer interface, which sets block's x position.
func (b *Block) SetX(x int) {
b.X = x
}
// SetY implements GridBufferer interface, it sets y position for block.
func (b *Block) SetY(y int) {
b.Y = y
}
// SetWidth implements GridBuffer interface, it sets block's width.
func (b *Block) SetWidth(w int) {
b.Width = w
}
func (b Block) InnerWidth() int {
return b.innerArea.Dx()
}
func (b Block) InnerHeight() int {
return b.innerArea.Dy()
}
func (b Block) InnerX() int {
return b.innerArea.Min.X
}
func (b Block) InnerY() int { return b.innerArea.Min.Y }

20
vendor/github.com/gizak/termui/block_common.go generated vendored
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@ -1,20 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
// +build !windows
package termui
const TOP_RIGHT = '┐'
const VERTICAL_LINE = '│'
const HORIZONTAL_LINE = '─'
const TOP_LEFT = '┌'
const BOTTOM_RIGHT = '┘'
const BOTTOM_LEFT = '└'
const VERTICAL_LEFT = '┤'
const VERTICAL_RIGHT = '├'
const HORIZONTAL_DOWN = '┬'
const HORIZONTAL_UP = '┴'
const QUOTA_LEFT = '«'
const QUOTA_RIGHT = '»'

14
vendor/github.com/gizak/termui/block_windows.go generated vendored
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@ -1,14 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
// +build windows
package termui
const TOP_RIGHT = '+'
const VERTICAL_LINE = '|'
const HORIZONTAL_LINE = '-'
const TOP_LEFT = '+'
const BOTTOM_RIGHT = '+'
const BOTTOM_LEFT = '+'

106
vendor/github.com/gizak/termui/buffer.go generated vendored
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@ -1,106 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import "image"
// Cell is a rune with assigned Fg and Bg
type Cell struct {
Ch rune
Fg Attribute
Bg Attribute
}
// Buffer is a renderable rectangle cell data container.
type Buffer struct {
Area image.Rectangle // selected drawing area
CellMap map[image.Point]Cell
}
// At returns the cell at (x,y).
func (b Buffer) At(x, y int) Cell {
return b.CellMap[image.Pt(x, y)]
}
// Set assigns a char to (x,y)
func (b Buffer) Set(x, y int, c Cell) {
b.CellMap[image.Pt(x, y)] = c
}
// Bounds returns the domain for which At can return non-zero color.
func (b Buffer) Bounds() image.Rectangle {
x0, y0, x1, y1 := 0, 0, 0, 0
for p := range b.CellMap {
if p.X > x1 {
x1 = p.X
}
if p.X < x0 {
x0 = p.X
}
if p.Y > y1 {
y1 = p.Y
}
if p.Y < y0 {
y0 = p.Y
}
}
return image.Rect(x0, y0, x1+1, y1+1)
}
// SetArea assigns a new rect area to Buffer b.
func (b *Buffer) SetArea(r image.Rectangle) {
b.Area.Max = r.Max
b.Area.Min = r.Min
}
// Sync sets drawing area to the buffer's bound
func (b *Buffer) Sync() {
b.SetArea(b.Bounds())
}
// NewCell returns a new cell
func NewCell(ch rune, fg, bg Attribute) Cell {
return Cell{ch, fg, bg}
}
// Merge merges bs Buffers onto b
func (b *Buffer) Merge(bs ...Buffer) {
for _, buf := range bs {
for p, v := range buf.CellMap {
b.Set(p.X, p.Y, v)
}
b.SetArea(b.Area.Union(buf.Area))
}
}
// NewBuffer returns a new Buffer
func NewBuffer() Buffer {
return Buffer{
CellMap: make(map[image.Point]Cell),
Area: image.Rectangle{}}
}
// Fill fills the Buffer b with ch,fg and bg.
func (b Buffer) Fill(ch rune, fg, bg Attribute) {
for x := b.Area.Min.X; x < b.Area.Max.X; x++ {
for y := b.Area.Min.Y; y < b.Area.Max.Y; y++ {
b.Set(x, y, Cell{ch, fg, bg})
}
}
}
// NewFilledBuffer returns a new Buffer filled with ch, fb and bg.
func NewFilledBuffer(x0, y0, x1, y1 int, ch rune, fg, bg Attribute) Buffer {
buf := NewBuffer()
buf.Area.Min = image.Pt(x0, y0)
buf.Area.Max = image.Pt(x1, y1)
for x := buf.Area.Min.X; x < buf.Area.Max.X; x++ {
for y := buf.Area.Min.Y; y < buf.Area.Max.Y; y++ {
buf.Set(x, y, Cell{ch, fg, bg})
}
}
return buf
}

72
vendor/github.com/gizak/termui/canvas.go generated vendored
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@ -1,72 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
/*
dots:
,___,
|1 4|
|2 5|
|3 6|
|7 8|
`````
*/
var brailleBase = '\u2800'
var brailleOftMap = [4][2]rune{
{'\u0001', '\u0008'},
{'\u0002', '\u0010'},
{'\u0004', '\u0020'},
{'\u0040', '\u0080'}}
// Canvas contains drawing map: i,j -> rune
type Canvas map[[2]int]rune
// NewCanvas returns an empty Canvas
func NewCanvas() Canvas {
return make(map[[2]int]rune)
}
func chOft(x, y int) rune {
return brailleOftMap[y%4][x%2]
}
func (c Canvas) rawCh(x, y int) rune {
if ch, ok := c[[2]int{x, y}]; ok {
return ch
}
return '\u0000' //brailleOffset
}
// return coordinate in terminal
func chPos(x, y int) (int, int) {
return y / 4, x / 2
}
// Set sets a point (x,y) in the virtual coordinate
func (c Canvas) Set(x, y int) {
i, j := chPos(x, y)
ch := c.rawCh(i, j)
ch |= chOft(x, y)
c[[2]int{i, j}] = ch
}
// Unset removes point (x,y)
func (c Canvas) Unset(x, y int) {
i, j := chPos(x, y)
ch := c.rawCh(i, j)
ch &= ^chOft(x, y)
c[[2]int{i, j}] = ch
}
// Buffer returns un-styled points
func (c Canvas) Buffer() Buffer {
buf := NewBuffer()
for k, v := range c {
buf.Set(k[0], k[1], Cell{Ch: v + brailleBase})
}
return buf
}

54
vendor/github.com/gizak/termui/config.py generated vendored
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@ -1,54 +0,0 @@
#!/usr/bin/env python3
import re
import os
import io
copyright = """// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
"""
exclude_dirs = [".git", "_docs"]
exclude_files = []
include_dirs = [".", "debug", "extra", "test", "_example"]
def is_target(fpath):
if os.path.splitext(fpath)[-1] == ".go":
return True
return False
def update_copyright(fpath):
print("processing " + fpath)
f = io.open(fpath, 'r', encoding='utf-8')
fstr = f.read()
f.close()
# remove old
m = re.search('^// Copyright .+?\r?\n\r?\n', fstr, re.MULTILINE|re.DOTALL)
if m:
fstr = fstr[m.end():]
# add new
fstr = copyright + fstr
f = io.open(fpath, 'w',encoding='utf-8')
f.write(fstr)
f.close()
def main():
for d in include_dirs:
files = [
os.path.join(d, f) for f in os.listdir(d)
if os.path.isfile(os.path.join(d, f))
]
for f in files:
if is_target(f):
update_copyright(f)
if __name__ == '__main__':
main()

29
vendor/github.com/gizak/termui/doc.go generated vendored
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@ -1,29 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
/*
Package termui is a library designed for creating command line UI. For more info, goto http://github.com/gizak/termui
A simplest example:
package main
import ui "github.com/gizak/termui"
func main() {
if err:=ui.Init(); err != nil {
panic(err)
}
defer ui.Close()
g := ui.NewGauge()
g.Percent = 50
g.Width = 50
g.BorderLabel = "Gauge"
ui.Render(g)
ui.Loop()
}
*/
package termui

324
vendor/github.com/gizak/termui/events.go generated vendored
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@ -1,324 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import (
"path"
"strconv"
"sync"
"time"
"github.com/nsf/termbox-go"
)
type Event struct {
Type string
Path string
From string
To string
Data interface{}
Time int64
}
var sysEvtChs []chan Event
type EvtKbd struct {
KeyStr string
}
func evtKbd(e termbox.Event) EvtKbd {
ek := EvtKbd{}
k := string(e.Ch)
pre := ""
mod := ""
if e.Mod == termbox.ModAlt {
mod = "M-"
}
if e.Ch == 0 {
if e.Key > 0xFFFF-12 {
k = "<f" + strconv.Itoa(0xFFFF-int(e.Key)+1) + ">"
} else if e.Key > 0xFFFF-25 {
ks := []string{"<insert>", "<delete>", "<home>", "<end>", "<previous>", "<next>", "<up>", "<down>", "<left>", "<right>"}
k = ks[0xFFFF-int(e.Key)-12]
}
if e.Key <= 0x7F {
pre = "C-"
k = string('a' - 1 + int(e.Key))
kmap := map[termbox.Key][2]string{
termbox.KeyCtrlSpace: {"C-", "<space>"},
termbox.KeyBackspace: {"", "<backspace>"},
termbox.KeyTab: {"", "<tab>"},
termbox.KeyEnter: {"", "<enter>"},
termbox.KeyEsc: {"", "<escape>"},
termbox.KeyCtrlBackslash: {"C-", "\\"},
termbox.KeyCtrlSlash: {"C-", "/"},
termbox.KeySpace: {"", "<space>"},
termbox.KeyCtrl8: {"C-", "8"},
}
if sk, ok := kmap[e.Key]; ok {
pre = sk[0]
k = sk[1]
}
}
}
ek.KeyStr = pre + mod + k
return ek
}
func crtTermboxEvt(e termbox.Event) Event {
systypemap := map[termbox.EventType]string{
termbox.EventKey: "keyboard",
termbox.EventResize: "window",
termbox.EventMouse: "mouse",
termbox.EventError: "error",
termbox.EventInterrupt: "interrupt",
}
ne := Event{From: "/sys", Time: time.Now().Unix()}
typ := e.Type
ne.Type = systypemap[typ]
switch typ {
case termbox.EventKey:
kbd := evtKbd(e)
ne.Path = "/sys/kbd/" + kbd.KeyStr
ne.Data = kbd
case termbox.EventResize:
wnd := EvtWnd{}
wnd.Width = e.Width
wnd.Height = e.Height
ne.Path = "/sys/wnd/resize"
ne.Data = wnd
case termbox.EventError:
err := EvtErr(e.Err)
ne.Path = "/sys/err"
ne.Data = err
case termbox.EventMouse:
m := EvtMouse{}
m.X = e.MouseX
m.Y = e.MouseY
ne.Path = "/sys/mouse"
ne.Data = m
}
return ne
}
type EvtWnd struct {
Width int
Height int
}
type EvtMouse struct {
X int
Y int
Press string
}
type EvtErr error
func hookTermboxEvt() {
for {
e := termbox.PollEvent()
for _, c := range sysEvtChs {
go func(ch chan Event) {
ch <- crtTermboxEvt(e)
}(c)
}
}
}
func NewSysEvtCh() chan Event {
ec := make(chan Event)
sysEvtChs = append(sysEvtChs, ec)
return ec
}
var DefaultEvtStream = NewEvtStream()
type EvtStream struct {
sync.RWMutex
srcMap map[string]chan Event
stream chan Event
wg sync.WaitGroup
sigStopLoop chan Event
Handlers map[string]func(Event)
hook func(Event)
}
func NewEvtStream() *EvtStream {
return &EvtStream{
srcMap: make(map[string]chan Event),
stream: make(chan Event),
Handlers: make(map[string]func(Event)),
sigStopLoop: make(chan Event),
}
}
func (es *EvtStream) Init() {
es.Merge("internal", es.sigStopLoop)
go func() {
es.wg.Wait()
close(es.stream)
}()
}
func cleanPath(p string) string {
if p == "" {
return "/"
}
if p[0] != '/' {
p = "/" + p
}
return path.Clean(p)
}
func isPathMatch(pattern, path string) bool {
if len(pattern) == 0 {
return false
}
n := len(pattern)
return len(path) >= n && path[0:n] == pattern
}
func (es *EvtStream) Merge(name string, ec chan Event) {
es.Lock()
defer es.Unlock()
es.wg.Add(1)
es.srcMap[name] = ec
go func(a chan Event) {
for n := range a {
n.From = name
es.stream <- n
}
es.wg.Done()
}(ec)
}
func (es *EvtStream) Handle(path string, handler func(Event)) {
es.Handlers[cleanPath(path)] = handler
}
func findMatch(mux map[string]func(Event), path string) string {
n := -1
pattern := ""
for m := range mux {
if !isPathMatch(m, path) {
continue
}
if len(m) > n {
pattern = m
n = len(m)
}
}
return pattern
}
// Remove all existing defined Handlers from the map
func (es *EvtStream) ResetHandlers() {
for Path, _ := range es.Handlers {
delete(es.Handlers, Path)
}
return
}
func (es *EvtStream) match(path string) string {
return findMatch(es.Handlers, path)
}
func (es *EvtStream) Hook(f func(Event)) {
es.hook = f
}
func (es *EvtStream) Loop() {
for e := range es.stream {
switch e.Path {
case "/sig/stoploop":
return
}
go func(a Event) {
es.RLock()
defer es.RUnlock()
if pattern := es.match(a.Path); pattern != "" {
es.Handlers[pattern](a)
}
}(e)
if es.hook != nil {
es.hook(e)
}
}
}
func (es *EvtStream) StopLoop() {
go func() {
e := Event{
Path: "/sig/stoploop",
}
es.sigStopLoop <- e
}()
}
func Merge(name string, ec chan Event) {
DefaultEvtStream.Merge(name, ec)
}
func Handle(path string, handler func(Event)) {
DefaultEvtStream.Handle(path, handler)
}
func Loop() {
DefaultEvtStream.Loop()
}
func StopLoop() {
DefaultEvtStream.StopLoop()
}
type EvtTimer struct {
Duration time.Duration
Count uint64
}
func NewTimerCh(du time.Duration) chan Event {
t := make(chan Event)
go func(a chan Event) {
n := uint64(0)
for {
n++
time.Sleep(du)
e := Event{}
e.Type = "timer"
e.Path = "/timer/" + du.String()
e.Time = time.Now().Unix()
e.Data = EvtTimer{
Duration: du,
Count: n,
}
t <- e
}
}(t)
return t
}
var DefaultHandler = func(e Event) {
}
var usrEvtCh = make(chan Event)
func SendCustomEvt(path string, data interface{}) {
e := Event{}
e.Path = path
e.Data = data
e.Time = time.Now().Unix()
usrEvtCh <- e
}

109
vendor/github.com/gizak/termui/gauge.go generated vendored
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@ -1,109 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import (
"strconv"
"strings"
)
// Gauge is a progress bar like widget.
// A simple example:
/*
g := termui.NewGauge()
g.Percent = 40
g.Width = 50
g.Height = 3
g.BorderLabel = "Slim Gauge"
g.BarColor = termui.ColorRed
g.PercentColor = termui.ColorBlue
*/
const ColorUndef Attribute = Attribute(^uint16(0))
type Gauge struct {
Block
Percent int
BarColor Attribute
PercentColor Attribute
PercentColorHighlighted Attribute
Label string
LabelAlign Align
}
// NewGauge return a new gauge with current theme.
func NewGauge() *Gauge {
g := &Gauge{
Block: *NewBlock(),
PercentColor: ThemeAttr("gauge.percent.fg"),
BarColor: ThemeAttr("gauge.bar.bg"),
Label: "{{percent}}%",
LabelAlign: AlignCenter,
PercentColorHighlighted: ColorUndef,
}
g.Width = 12
g.Height = 5
return g
}
// Buffer implements Bufferer interface.
func (g *Gauge) Buffer() Buffer {
buf := g.Block.Buffer()
// plot bar
w := g.Percent * g.innerArea.Dx() / 100
for i := 0; i < g.innerArea.Dy(); i++ {
for j := 0; j < w; j++ {
c := Cell{}
c.Ch = ' '
c.Bg = g.BarColor
if c.Bg == ColorDefault {
c.Bg |= AttrReverse
}
buf.Set(g.innerArea.Min.X+j, g.innerArea.Min.Y+i, c)
}
}
// plot percentage
s := strings.Replace(g.Label, "{{percent}}", strconv.Itoa(g.Percent), -1)
pry := g.innerArea.Min.Y + g.innerArea.Dy()/2
rs := str2runes(s)
var pos int
switch g.LabelAlign {
case AlignLeft:
pos = 0
case AlignCenter:
pos = (g.innerArea.Dx() - strWidth(s)) / 2
case AlignRight:
pos = g.innerArea.Dx() - strWidth(s) - 1
}
pos += g.innerArea.Min.X
for i, v := range rs {
c := Cell{
Ch: v,
Fg: g.PercentColor,
}
if w+g.innerArea.Min.X > pos+i {
c.Bg = g.BarColor
if c.Bg == ColorDefault {
c.Bg |= AttrReverse
}
if g.PercentColorHighlighted != ColorUndef {
c.Fg = g.PercentColorHighlighted
}
} else {
c.Bg = g.Block.Bg
}
buf.Set(1+pos+i, pry, c)
}
return buf
}

30
vendor/github.com/gizak/termui/glide.lock generated vendored
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@ -1,30 +0,0 @@
hash: 7a754ba100256404a978b2fc8738aee337beb822458e4b6060399fb89ebd215c
updated: 2016-11-03T17:39:24.323773674-04:00
imports:
- name: github.com/maruel/panicparse
version: ad661195ed0e88491e0f14be6613304e3b1141d6
subpackages:
- stack
- name: github.com/mattn/go-runewidth
version: 737072b4e32b7a5018b4a7125da8d12de90e8045
- name: github.com/mitchellh/go-wordwrap
version: ad45545899c7b13c020ea92b2072220eefad42b8
- name: github.com/nsf/termbox-go
version: b6acae516ace002cb8105a89024544a1480655a5
- name: golang.org/x/net
version: 569280fa63be4e201b975e5411e30a92178f0118
subpackages:
- websocket
testImports:
- name: github.com/davecgh/go-spew
version: 346938d642f2ec3594ed81d874461961cd0faa76
subpackages:
- spew
- name: github.com/pmezard/go-difflib
version: d8ed2627bdf02c080bf22230dbb337003b7aba2d
subpackages:
- difflib
- name: github.com/stretchr/testify
version: 976c720a22c8eb4eb6a0b4348ad85ad12491a506
subpackages:
- assert

9
vendor/github.com/gizak/termui/glide.yaml generated vendored
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@ -1,9 +0,0 @@
package: github.com/gizak/termui
import:
- package: github.com/mattn/go-runewidth
- package: github.com/mitchellh/go-wordwrap
- package: github.com/nsf/termbox-go
- package: golang.org/x/net
subpackages:
- websocket
- package: github.com/maruel/panicparse

279
vendor/github.com/gizak/termui/grid.go generated vendored
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@ -1,279 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
// GridBufferer introduces a Bufferer that can be manipulated by Grid.
type GridBufferer interface {
Bufferer
GetHeight() int
SetWidth(int)
SetX(int)
SetY(int)
}
// Row builds a layout tree
type Row struct {
Cols []*Row //children
Widget GridBufferer // root
X int
Y int
Width int
Height int
Span int
Offset int
}
// calculate and set the underlying layout tree's x, y, height and width.
func (r *Row) calcLayout() {
r.assignWidth(r.Width)
r.Height = r.solveHeight()
r.assignX(r.X)
r.assignY(r.Y)
}
// tell if the node is leaf in the tree.
func (r *Row) isLeaf() bool {
return r.Cols == nil || len(r.Cols) == 0
}
func (r *Row) isRenderableLeaf() bool {
return r.isLeaf() && r.Widget != nil
}
// assign widgets' (and their parent rows') width recursively.
func (r *Row) assignWidth(w int) {
r.SetWidth(w)
accW := 0 // acc span and offset
calcW := make([]int, len(r.Cols)) // calculated width
calcOftX := make([]int, len(r.Cols)) // computated start position of x
for i, c := range r.Cols {
accW += c.Span + c.Offset
cw := int(float64(c.Span*r.Width) / 12.0)
if i >= 1 {
calcOftX[i] = calcOftX[i-1] +
calcW[i-1] +
int(float64(r.Cols[i-1].Offset*r.Width)/12.0)
}
// use up the space if it is the last col
if i == len(r.Cols)-1 && accW == 12 {
cw = r.Width - calcOftX[i]
}
calcW[i] = cw
r.Cols[i].assignWidth(cw)
}
}
// bottom up calc and set rows' (and their widgets') height,
// return r's total height.
func (r *Row) solveHeight() int {
if r.isRenderableLeaf() {
r.Height = r.Widget.GetHeight()
return r.Widget.GetHeight()
}
maxh := 0
if !r.isLeaf() {
for _, c := range r.Cols {
nh := c.solveHeight()
// when embed rows in Cols, row widgets stack up
if r.Widget != nil {
nh += r.Widget.GetHeight()
}
if nh > maxh {
maxh = nh
}
}
}
r.Height = maxh
return maxh
}
// recursively assign x position for r tree.
func (r *Row) assignX(x int) {
r.SetX(x)
if !r.isLeaf() {
acc := 0
for i, c := range r.Cols {
if c.Offset != 0 {
acc += int(float64(c.Offset*r.Width) / 12.0)
}
r.Cols[i].assignX(x + acc)
acc += c.Width
}
}
}
// recursively assign y position to r.
func (r *Row) assignY(y int) {
r.SetY(y)
if r.isLeaf() {
return
}
for i := range r.Cols {
acc := 0
if r.Widget != nil {
acc = r.Widget.GetHeight()
}
r.Cols[i].assignY(y + acc)
}
}
// GetHeight implements GridBufferer interface.
func (r Row) GetHeight() int {
return r.Height
}
// SetX implements GridBufferer interface.
func (r *Row) SetX(x int) {
r.X = x
if r.Widget != nil {
r.Widget.SetX(x)
}
}
// SetY implements GridBufferer interface.
func (r *Row) SetY(y int) {
r.Y = y
if r.Widget != nil {
r.Widget.SetY(y)
}
}
// SetWidth implements GridBufferer interface.
func (r *Row) SetWidth(w int) {
r.Width = w
if r.Widget != nil {
r.Widget.SetWidth(w)
}
}
// Buffer implements Bufferer interface,
// recursively merge all widgets buffer
func (r *Row) Buffer() Buffer {
merged := NewBuffer()
if r.isRenderableLeaf() {
return r.Widget.Buffer()
}
// for those are not leaves but have a renderable widget
if r.Widget != nil {
merged.Merge(r.Widget.Buffer())
}
// collect buffer from children
if !r.isLeaf() {
for _, c := range r.Cols {
merged.Merge(c.Buffer())
}
}
return merged
}
// Grid implements 12 columns system.
// A simple example:
/*
import ui "github.com/gizak/termui"
// init and create widgets...
// build
ui.Body.AddRows(
ui.NewRow(
ui.NewCol(6, 0, widget0),
ui.NewCol(6, 0, widget1)),
ui.NewRow(
ui.NewCol(3, 0, widget2),
ui.NewCol(3, 0, widget30, widget31, widget32),
ui.NewCol(6, 0, widget4)))
// calculate layout
ui.Body.Align()
ui.Render(ui.Body)
*/
type Grid struct {
Rows []*Row
Width int
X int
Y int
BgColor Attribute
}
// NewGrid returns *Grid with given rows.
func NewGrid(rows ...*Row) *Grid {
return &Grid{Rows: rows}
}
// AddRows appends given rows to Grid.
func (g *Grid) AddRows(rs ...*Row) {
g.Rows = append(g.Rows, rs...)
}
// NewRow creates a new row out of given columns.
func NewRow(cols ...*Row) *Row {
rs := &Row{Span: 12, Cols: cols}
return rs
}
// NewCol accepts: widgets are LayoutBufferer or widgets is A NewRow.
// Note that if multiple widgets are provided, they will stack up in the col.
func NewCol(span, offset int, widgets ...GridBufferer) *Row {
r := &Row{Span: span, Offset: offset}
if widgets != nil && len(widgets) == 1 {
wgt := widgets[0]
nw, isRow := wgt.(*Row)
if isRow {
r.Cols = nw.Cols
} else {
r.Widget = wgt
}
return r
}
r.Cols = []*Row{}
ir := r
for _, w := range widgets {
nr := &Row{Span: 12, Widget: w}
ir.Cols = []*Row{nr}
ir = nr
}
return r
}
// Align calculate each rows' layout.
func (g *Grid) Align() {
h := 0
for _, r := range g.Rows {
r.SetWidth(g.Width)
r.SetX(g.X)
r.SetY(g.Y + h)
r.calcLayout()
h += r.GetHeight()
}
}
// Buffer implments Bufferer interface.
func (g Grid) Buffer() Buffer {
buf := NewBuffer()
for _, r := range g.Rows {
buf.Merge(r.Buffer())
}
return buf
}
var Body *Grid

222
vendor/github.com/gizak/termui/helper.go generated vendored
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@ -1,222 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import (
"regexp"
"strings"
tm "github.com/nsf/termbox-go"
)
import rw "github.com/mattn/go-runewidth"
/* ---------------Port from termbox-go --------------------- */
// Attribute is printable cell's color and style.
type Attribute uint16
// 8 basic clolrs
const (
ColorDefault Attribute = iota
ColorBlack
ColorRed
ColorGreen
ColorYellow
ColorBlue
ColorMagenta
ColorCyan
ColorWhite
)
//Have a constant that defines number of colors
const NumberofColors = 8
// Text style
const (
AttrBold Attribute = 1 << (iota + 9)
AttrUnderline
AttrReverse
)
var (
dot = "…"
dotw = rw.StringWidth(dot)
)
/* ----------------------- End ----------------------------- */
func toTmAttr(x Attribute) tm.Attribute {
return tm.Attribute(x)
}
func str2runes(s string) []rune {
return []rune(s)
}
// Here for backwards-compatibility.
func trimStr2Runes(s string, w int) []rune {
return TrimStr2Runes(s, w)
}
// TrimStr2Runes trims string to w[-1 rune], appends …, and returns the runes
// of that string if string is grather then n. If string is small then w,
// return the runes.
func TrimStr2Runes(s string, w int) []rune {
if w <= 0 {
return []rune{}
}
sw := rw.StringWidth(s)
if sw > w {
return []rune(rw.Truncate(s, w, dot))
}
return str2runes(s)
}
// TrimStrIfAppropriate trim string to "s[:-1] + …"
// if string > width otherwise return string
func TrimStrIfAppropriate(s string, w int) string {
if w <= 0 {
return ""
}
sw := rw.StringWidth(s)
if sw > w {
return rw.Truncate(s, w, dot)
}
return s
}
func strWidth(s string) int {
return rw.StringWidth(s)
}
func charWidth(ch rune) int {
return rw.RuneWidth(ch)
}
var whiteSpaceRegex = regexp.MustCompile(`\s`)
// StringToAttribute converts text to a termui attribute. You may specifiy more
// then one attribute like that: "BLACK, BOLD, ...". All whitespaces
// are ignored.
func StringToAttribute(text string) Attribute {
text = whiteSpaceRegex.ReplaceAllString(strings.ToLower(text), "")
attributes := strings.Split(text, ",")
result := Attribute(0)
for _, theAttribute := range attributes {
var match Attribute
switch theAttribute {
case "reset", "default":
match = ColorDefault
case "black":
match = ColorBlack
case "red":
match = ColorRed
case "green":
match = ColorGreen
case "yellow":
match = ColorYellow
case "blue":
match = ColorBlue
case "magenta":
match = ColorMagenta
case "cyan":
match = ColorCyan
case "white":
match = ColorWhite
case "bold":
match = AttrBold
case "underline":
match = AttrUnderline
case "reverse":
match = AttrReverse
}
result |= match
}
return result
}
// TextCells returns a coloured text cells []Cell
func TextCells(s string, fg, bg Attribute) []Cell {
cs := make([]Cell, 0, len(s))
// sequence := MarkdownTextRendererFactory{}.TextRenderer(s).Render(fg, bg)
// runes := []rune(sequence.NormalizedText)
runes := str2runes(s)
for n := range runes {
// point, _ := sequence.PointAt(n, 0, 0)
// cs = append(cs, Cell{point.Ch, point.Fg, point.Bg})
cs = append(cs, Cell{runes[n], fg, bg})
}
return cs
}
// Width returns the actual screen space the cell takes (usually 1 or 2).
func (c Cell) Width() int {
return charWidth(c.Ch)
}
// Copy return a copy of c
func (c Cell) Copy() Cell {
return c
}
// TrimTxCells trims the overflowed text cells sequence.
func TrimTxCells(cs []Cell, w int) []Cell {
if len(cs) <= w {
return cs
}
return cs[:w]
}
// DTrimTxCls trims the overflowed text cells sequence and append dots at the end.
func DTrimTxCls(cs []Cell, w int) []Cell {
l := len(cs)
if l <= 0 {
return []Cell{}
}
rt := make([]Cell, 0, w)
csw := 0
for i := 0; i < l && csw <= w; i++ {
c := cs[i]
cw := c.Width()
if cw+csw < w {
rt = append(rt, c)
csw += cw
} else {
rt = append(rt, Cell{'…', c.Fg, c.Bg})
break
}
}
return rt
}
func CellsToStr(cs []Cell) string {
str := ""
for _, c := range cs {
str += string(c.Ch)
}
return str
}

331
vendor/github.com/gizak/termui/linechart.go generated vendored
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@ -1,331 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import (
"fmt"
"math"
)
// only 16 possible combinations, why bother
var braillePatterns = map[[2]int]rune{
[2]int{0, 0}: '⣀',
[2]int{0, 1}: '⡠',
[2]int{0, 2}: '⡐',
[2]int{0, 3}: '⡈',
[2]int{1, 0}: '⢄',
[2]int{1, 1}: '⠤',
[2]int{1, 2}: '⠔',
[2]int{1, 3}: '⠌',
[2]int{2, 0}: '⢂',
[2]int{2, 1}: '⠢',
[2]int{2, 2}: '⠒',
[2]int{2, 3}: '⠊',
[2]int{3, 0}: '⢁',
[2]int{3, 1}: '⠡',
[2]int{3, 2}: '⠑',
[2]int{3, 3}: '⠉',
}
var lSingleBraille = [4]rune{'\u2840', '⠄', '⠂', '⠁'}
var rSingleBraille = [4]rune{'\u2880', '⠠', '⠐', '⠈'}
// LineChart has two modes: braille(default) and dot. Using braille gives 2x capicity as dot mode,
// because one braille char can represent two data points.
/*
lc := termui.NewLineChart()
lc.BorderLabel = "braille-mode Line Chart"
lc.Data = [1.2, 1.3, 1.5, 1.7, 1.5, 1.6, 1.8, 2.0]
lc.Width = 50
lc.Height = 12
lc.AxesColor = termui.ColorWhite
lc.LineColor = termui.ColorGreen | termui.AttrBold
// termui.Render(lc)...
*/
type LineChart struct {
Block
Data []float64
DataLabels []string // if unset, the data indices will be used
Mode string // braille | dot
DotStyle rune
LineColor Attribute
scale float64 // data span per cell on y-axis
AxesColor Attribute
drawingX int
drawingY int
axisYHeight int
axisXWidth int
axisYLabelGap int
axisXLabelGap int
topValue float64
bottomValue float64
labelX [][]rune
labelY [][]rune
labelYSpace int
maxY float64
minY float64
autoLabels bool
}
// NewLineChart returns a new LineChart with current theme.
func NewLineChart() *LineChart {
lc := &LineChart{Block: *NewBlock()}
lc.AxesColor = ThemeAttr("linechart.axes.fg")
lc.LineColor = ThemeAttr("linechart.line.fg")
lc.Mode = "braille"
lc.DotStyle = '•'
lc.axisXLabelGap = 2
lc.axisYLabelGap = 1
lc.bottomValue = math.Inf(1)
lc.topValue = math.Inf(-1)
return lc
}
// one cell contains two data points
// so the capicity is 2x as dot-mode
func (lc *LineChart) renderBraille() Buffer {
buf := NewBuffer()
// return: b -> which cell should the point be in
// m -> in the cell, divided into 4 equal height levels, which subcell?
getPos := func(d float64) (b, m int) {
cnt4 := int((d-lc.bottomValue)/(lc.scale/4) + 0.5)
b = cnt4 / 4
m = cnt4 % 4
return
}
// plot points
for i := 0; 2*i+1 < len(lc.Data) && i < lc.axisXWidth; i++ {
b0, m0 := getPos(lc.Data[2*i])
b1, m1 := getPos(lc.Data[2*i+1])
if b0 == b1 {
c := Cell{
Ch: braillePatterns[[2]int{m0, m1}],
Bg: lc.Bg,
Fg: lc.LineColor,
}
y := lc.innerArea.Min.Y + lc.innerArea.Dy() - 3 - b0
x := lc.innerArea.Min.X + lc.labelYSpace + 1 + i
buf.Set(x, y, c)
} else {
c0 := Cell{Ch: lSingleBraille[m0],
Fg: lc.LineColor,
Bg: lc.Bg}
x0 := lc.innerArea.Min.X + lc.labelYSpace + 1 + i
y0 := lc.innerArea.Min.Y + lc.innerArea.Dy() - 3 - b0
buf.Set(x0, y0, c0)
c1 := Cell{Ch: rSingleBraille[m1],
Fg: lc.LineColor,
Bg: lc.Bg}
x1 := lc.innerArea.Min.X + lc.labelYSpace + 1 + i
y1 := lc.innerArea.Min.Y + lc.innerArea.Dy() - 3 - b1
buf.Set(x1, y1, c1)
}
}
return buf
}
func (lc *LineChart) renderDot() Buffer {
buf := NewBuffer()
for i := 0; i < len(lc.Data) && i < lc.axisXWidth; i++ {
c := Cell{
Ch: lc.DotStyle,
Fg: lc.LineColor,
Bg: lc.Bg,
}
x := lc.innerArea.Min.X + lc.labelYSpace + 1 + i
y := lc.innerArea.Min.Y + lc.innerArea.Dy() - 3 - int((lc.Data[i]-lc.bottomValue)/lc.scale+0.5)
buf.Set(x, y, c)
}
return buf
}
func (lc *LineChart) calcLabelX() {
lc.labelX = [][]rune{}
for i, l := 0, 0; i < len(lc.DataLabels) && l < lc.axisXWidth; i++ {
if lc.Mode == "dot" {
if l >= len(lc.DataLabels) {
break
}
s := str2runes(lc.DataLabels[l])
w := strWidth(lc.DataLabels[l])
if l+w <= lc.axisXWidth {
lc.labelX = append(lc.labelX, s)
}
l += w + lc.axisXLabelGap
} else { // braille
if 2*l >= len(lc.DataLabels) {
break
}
s := str2runes(lc.DataLabels[2*l])
w := strWidth(lc.DataLabels[2*l])
if l+w <= lc.axisXWidth {
lc.labelX = append(lc.labelX, s)
}
l += w + lc.axisXLabelGap
}
}
}
func shortenFloatVal(x float64) string {
s := fmt.Sprintf("%.2f", x)
if len(s)-3 > 3 {
s = fmt.Sprintf("%.2e", x)
}
if x < 0 {
s = fmt.Sprintf("%.2f", x)
}
return s
}
func (lc *LineChart) calcLabelY() {
span := lc.topValue - lc.bottomValue
lc.scale = span / float64(lc.axisYHeight)
n := (1 + lc.axisYHeight) / (lc.axisYLabelGap + 1)
lc.labelY = make([][]rune, n)
maxLen := 0
for i := 0; i < n; i++ {
s := str2runes(shortenFloatVal(lc.bottomValue + float64(i)*span/float64(n)))
if len(s) > maxLen {
maxLen = len(s)
}
lc.labelY[i] = s
}
lc.labelYSpace = maxLen
}
func (lc *LineChart) calcLayout() {
// set datalabels if it is not provided
if (lc.DataLabels == nil || len(lc.DataLabels) == 0) || lc.autoLabels {
lc.autoLabels = true
lc.DataLabels = make([]string, len(lc.Data))
for i := range lc.Data {
lc.DataLabels[i] = fmt.Sprint(i)
}
}
// lazy increase, to avoid y shaking frequently
// update bound Y when drawing is gonna overflow
lc.minY = lc.Data[0]
lc.maxY = lc.Data[0]
// valid visible range
vrange := lc.innerArea.Dx()
if lc.Mode == "braille" {
vrange = 2 * lc.innerArea.Dx()
}
if vrange > len(lc.Data) {
vrange = len(lc.Data)
}
for _, v := range lc.Data[:vrange] {
if v > lc.maxY {
lc.maxY = v
}
if v < lc.minY {
lc.minY = v
}
}
span := lc.maxY - lc.minY
if lc.minY < lc.bottomValue {
lc.bottomValue = lc.minY - 0.2*span
}
if lc.maxY > lc.topValue {
lc.topValue = lc.maxY + 0.2*span
}
lc.axisYHeight = lc.innerArea.Dy() - 2
lc.calcLabelY()
lc.axisXWidth = lc.innerArea.Dx() - 1 - lc.labelYSpace
lc.calcLabelX()
lc.drawingX = lc.innerArea.Min.X + 1 + lc.labelYSpace
lc.drawingY = lc.innerArea.Min.Y
}
func (lc *LineChart) plotAxes() Buffer {
buf := NewBuffer()
origY := lc.innerArea.Min.Y + lc.innerArea.Dy() - 2
origX := lc.innerArea.Min.X + lc.labelYSpace
buf.Set(origX, origY, Cell{Ch: ORIGIN, Fg: lc.AxesColor, Bg: lc.Bg})
for x := origX + 1; x < origX+lc.axisXWidth; x++ {
buf.Set(x, origY, Cell{Ch: HDASH, Fg: lc.AxesColor, Bg: lc.Bg})
}
for dy := 1; dy <= lc.axisYHeight; dy++ {
buf.Set(origX, origY-dy, Cell{Ch: VDASH, Fg: lc.AxesColor, Bg: lc.Bg})
}
// x label
oft := 0
for _, rs := range lc.labelX {
if oft+len(rs) > lc.axisXWidth {
break
}
for j, r := range rs {
c := Cell{
Ch: r,
Fg: lc.AxesColor,
Bg: lc.Bg,
}
x := origX + oft + j
y := lc.innerArea.Min.Y + lc.innerArea.Dy() - 1
buf.Set(x, y, c)
}
oft += len(rs) + lc.axisXLabelGap
}
// y labels
for i, rs := range lc.labelY {
for j, r := range rs {
buf.Set(
lc.innerArea.Min.X+j,
origY-i*(lc.axisYLabelGap+1),
Cell{Ch: r, Fg: lc.AxesColor, Bg: lc.Bg})
}
}
return buf
}
// Buffer implements Bufferer interface.
func (lc *LineChart) Buffer() Buffer {
buf := lc.Block.Buffer()
if lc.Data == nil || len(lc.Data) == 0 {
return buf
}
lc.calcLayout()
buf.Merge(lc.plotAxes())
if lc.Mode == "dot" {
buf.Merge(lc.renderDot())
} else {
buf.Merge(lc.renderBraille())
}
return buf
}

11
vendor/github.com/gizak/termui/linechart_others.go generated vendored
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@ -1,11 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
// +build !windows
package termui
const VDASH = '┊'
const HDASH = '┈'
const ORIGIN = '└'

11
vendor/github.com/gizak/termui/linechart_windows.go generated vendored
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@ -1,11 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
// +build windows
package termui
const VDASH = '|'
const HDASH = '-'
const ORIGIN = '+'

89
vendor/github.com/gizak/termui/list.go generated vendored
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@ -1,89 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import "strings"
// List displays []string as its items,
// it has a Overflow option (default is "hidden"), when set to "hidden",
// the item exceeding List's width is truncated, but when set to "wrap",
// the overflowed text breaks into next line.
/*
strs := []string{
"[0] github.com/gizak/termui",
"[1] editbox.go",
"[2] iterrupt.go",
"[3] keyboard.go",
"[4] output.go",
"[5] random_out.go",
"[6] dashboard.go",
"[7] nsf/termbox-go"}
ls := termui.NewList()
ls.Items = strs
ls.ItemFgColor = termui.ColorYellow
ls.BorderLabel = "List"
ls.Height = 7
ls.Width = 25
ls.Y = 0
*/
type List struct {
Block
Items []string
Overflow string
ItemFgColor Attribute
ItemBgColor Attribute
}
// NewList returns a new *List with current theme.
func NewList() *List {
l := &List{Block: *NewBlock()}
l.Overflow = "hidden"
l.ItemFgColor = ThemeAttr("list.item.fg")
l.ItemBgColor = ThemeAttr("list.item.bg")
return l
}
// Buffer implements Bufferer interface.
func (l *List) Buffer() Buffer {
buf := l.Block.Buffer()
switch l.Overflow {
case "wrap":
cs := DefaultTxBuilder.Build(strings.Join(l.Items, "\n"), l.ItemFgColor, l.ItemBgColor)
i, j, k := 0, 0, 0
for i < l.innerArea.Dy() && k < len(cs) {
w := cs[k].Width()
if cs[k].Ch == '\n' || j+w > l.innerArea.Dx() {
i++
j = 0
if cs[k].Ch == '\n' {
k++
}
continue
}
buf.Set(l.innerArea.Min.X+j, l.innerArea.Min.Y+i, cs[k])
k++
j++
}
case "hidden":
trimItems := l.Items
if len(trimItems) > l.innerArea.Dy() {
trimItems = trimItems[:l.innerArea.Dy()]
}
for i, v := range trimItems {
cs := DTrimTxCls(DefaultTxBuilder.Build(v, l.ItemFgColor, l.ItemBgColor), l.innerArea.Dx())
j := 0
for _, vv := range cs {
w := vv.Width()
buf.Set(l.innerArea.Min.X+j, l.innerArea.Min.Y+i, vv)
j += w
}
}
}
return buf
}

242
vendor/github.com/gizak/termui/mbarchart.go generated vendored
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@ -1,242 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import (
"fmt"
)
// This is the implemetation of multi-colored or stacked bar graph. This is different from default barGraph which is implemented in bar.go
// Multi-Colored-BarChart creates multiple bars in a widget:
/*
bc := termui.NewMBarChart()
data := make([][]int, 2)
data[0] := []int{3, 2, 5, 7, 9, 4}
data[1] := []int{7, 8, 5, 3, 1, 6}
bclabels := []string{"S0", "S1", "S2", "S3", "S4", "S5"}
bc.BorderLabel = "Bar Chart"
bc.Data = data
bc.Width = 26
bc.Height = 10
bc.DataLabels = bclabels
bc.TextColor = termui.ColorGreen
bc.BarColor = termui.ColorRed
bc.NumColor = termui.ColorYellow
*/
type MBarChart struct {
Block
BarColor [NumberofColors]Attribute
TextColor Attribute
NumColor [NumberofColors]Attribute
Data [NumberofColors][]int
DataLabels []string
BarWidth int
BarGap int
labels [][]rune
dataNum [NumberofColors][][]rune
numBar int
scale float64
max int
minDataLen int
numStack int
ShowScale bool
maxScale []rune
}
// NewBarChart returns a new *BarChart with current theme.
func NewMBarChart() *MBarChart {
bc := &MBarChart{Block: *NewBlock()}
bc.BarColor[0] = ThemeAttr("mbarchart.bar.bg")
bc.NumColor[0] = ThemeAttr("mbarchart.num.fg")
bc.TextColor = ThemeAttr("mbarchart.text.fg")
bc.BarGap = 1
bc.BarWidth = 3
return bc
}
func (bc *MBarChart) layout() {
bc.numBar = bc.innerArea.Dx() / (bc.BarGap + bc.BarWidth)
bc.labels = make([][]rune, bc.numBar)
DataLen := 0
LabelLen := len(bc.DataLabels)
bc.minDataLen = 9999 //Set this to some very hight value so that we find the minimum one We want to know which array among data[][] has got the least length
// We need to know how many stack/data array data[0] , data[1] are there
for i := 0; i < len(bc.Data); i++ {
if bc.Data[i] == nil {
break
}
DataLen++
}
bc.numStack = DataLen
//We need to know what is the mimimum size of data array data[0] could have 10 elements data[1] could have only 5, so we plot only 5 bar graphs
for i := 0; i < DataLen; i++ {
if bc.minDataLen > len(bc.Data[i]) {
bc.minDataLen = len(bc.Data[i])
}
}
if LabelLen > bc.minDataLen {
LabelLen = bc.minDataLen
}
for i := 0; i < LabelLen && i < bc.numBar; i++ {
bc.labels[i] = trimStr2Runes(bc.DataLabels[i], bc.BarWidth)
}
for i := 0; i < bc.numStack; i++ {
bc.dataNum[i] = make([][]rune, len(bc.Data[i]))
//For each stack of bar calcualte the rune
for j := 0; j < LabelLen && i < bc.numBar; j++ {
n := bc.Data[i][j]
s := fmt.Sprint(n)
bc.dataNum[i][j] = trimStr2Runes(s, bc.BarWidth)
}
//If color is not defined by default then populate a color that is different from the prevous bar
if bc.BarColor[i] == ColorDefault && bc.NumColor[i] == ColorDefault {
if i == 0 {
bc.BarColor[i] = ColorBlack
} else {
bc.BarColor[i] = bc.BarColor[i-1] + 1
if bc.BarColor[i] > NumberofColors {
bc.BarColor[i] = ColorBlack
}
}
bc.NumColor[i] = (NumberofColors + 1) - bc.BarColor[i] //Make NumColor opposite of barColor for visibility
}
}
//If Max value is not set then we have to populate, this time the max value will be max(sum(d1[0],d2[0],d3[0]) .... sum(d1[n], d2[n], d3[n]))
if bc.max == 0 {
bc.max = -1
}
for i := 0; i < bc.minDataLen && i < LabelLen; i++ {
var dsum int
for j := 0; j < bc.numStack; j++ {
dsum += bc.Data[j][i]
}
if dsum > bc.max {
bc.max = dsum
}
}
//Finally Calculate max sale
if bc.ShowScale {
s := fmt.Sprintf("%d", bc.max)
bc.maxScale = trimStr2Runes(s, len(s))
bc.scale = float64(bc.max) / float64(bc.innerArea.Dy()-2)
} else {
bc.scale = float64(bc.max) / float64(bc.innerArea.Dy()-1)
}
}
func (bc *MBarChart) SetMax(max int) {
if max > 0 {
bc.max = max
}
}
// Buffer implements Bufferer interface.
func (bc *MBarChart) Buffer() Buffer {
buf := bc.Block.Buffer()
bc.layout()
var oftX int
for i := 0; i < bc.numBar && i < bc.minDataLen && i < len(bc.DataLabels); i++ {
ph := 0 //Previous Height to stack up
oftX = i * (bc.BarWidth + bc.BarGap)
for i1 := 0; i1 < bc.numStack; i1++ {
h := int(float64(bc.Data[i1][i]) / bc.scale)
// plot bars
for j := 0; j < bc.BarWidth; j++ {
for k := 0; k < h; k++ {
c := Cell{
Ch: ' ',
Bg: bc.BarColor[i1],
}
if bc.BarColor[i1] == ColorDefault { // when color is default, space char treated as transparent!
c.Bg |= AttrReverse
}
x := bc.innerArea.Min.X + i*(bc.BarWidth+bc.BarGap) + j
y := bc.innerArea.Min.Y + bc.innerArea.Dy() - 2 - k - ph
buf.Set(x, y, c)
}
}
ph += h
}
// plot text
for j, k := 0, 0; j < len(bc.labels[i]); j++ {
w := charWidth(bc.labels[i][j])
c := Cell{
Ch: bc.labels[i][j],
Bg: bc.Bg,
Fg: bc.TextColor,
}
y := bc.innerArea.Min.Y + bc.innerArea.Dy() - 1
x := bc.innerArea.Max.X + oftX + ((bc.BarWidth - len(bc.labels[i])) / 2) + k
buf.Set(x, y, c)
k += w
}
// plot num
ph = 0 //re-initialize previous height
for i1 := 0; i1 < bc.numStack; i1++ {
h := int(float64(bc.Data[i1][i]) / bc.scale)
for j := 0; j < len(bc.dataNum[i1][i]) && h > 0; j++ {
c := Cell{
Ch: bc.dataNum[i1][i][j],
Fg: bc.NumColor[i1],
Bg: bc.BarColor[i1],
}
if bc.BarColor[i1] == ColorDefault { // the same as above
c.Bg |= AttrReverse
}
if h == 0 {
c.Bg = bc.Bg
}
x := bc.innerArea.Min.X + oftX + (bc.BarWidth-len(bc.dataNum[i1][i]))/2 + j
y := bc.innerArea.Min.Y + bc.innerArea.Dy() - 2 - ph
buf.Set(x, y, c)
}
ph += h
}
}
if bc.ShowScale {
//Currently bar graph only supprts data range from 0 to MAX
//Plot 0
c := Cell{
Ch: '0',
Bg: bc.Bg,
Fg: bc.TextColor,
}
y := bc.innerArea.Min.Y + bc.innerArea.Dy() - 2
x := bc.X
buf.Set(x, y, c)
//Plot the maximum sacle value
for i := 0; i < len(bc.maxScale); i++ {
c := Cell{
Ch: bc.maxScale[i],
Bg: bc.Bg,
Fg: bc.TextColor,
}
y := bc.innerArea.Min.Y
x := bc.X + i
buf.Set(x, y, c)
}
}
return buf
}

28
vendor/github.com/gizak/termui/mkdocs.yml generated vendored
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@ -1,28 +0,0 @@
pages:
- Home: 'index.md'
- Quickstart: 'quickstart.md'
- Recipes: 'recipes.md'
- References:
- Layouts: 'layouts.md'
- Components: 'components.md'
- Events: 'events.md'
- Themes: 'themes.md'
- Versions: 'versions.md'
- About: 'about.md'
site_name: termui
repo_url: https://github.com/gizak/termui/
site_description: 'termui user guide'
site_author: gizak
docs_dir: '_docs'
theme: readthedocs
markdown_extensions:
- smarty
- admonition
- toc
extra:
version: 1.0

73
vendor/github.com/gizak/termui/par.go generated vendored
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@ -1,73 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
// Par displays a paragraph.
/*
par := termui.NewPar("Simple Text")
par.Height = 3
par.Width = 17
par.BorderLabel = "Label"
*/
type Par struct {
Block
Text string
TextFgColor Attribute
TextBgColor Attribute
WrapLength int // words wrap limit. Note it may not work properly with multi-width char
}
// NewPar returns a new *Par with given text as its content.
func NewPar(s string) *Par {
return &Par{
Block: *NewBlock(),
Text: s,
TextFgColor: ThemeAttr("par.text.fg"),
TextBgColor: ThemeAttr("par.text.bg"),
WrapLength: 0,
}
}
// Buffer implements Bufferer interface.
func (p *Par) Buffer() Buffer {
buf := p.Block.Buffer()
fg, bg := p.TextFgColor, p.TextBgColor
cs := DefaultTxBuilder.Build(p.Text, fg, bg)
// wrap if WrapLength set
if p.WrapLength < 0 {
cs = wrapTx(cs, p.Width-2)
} else if p.WrapLength > 0 {
cs = wrapTx(cs, p.WrapLength)
}
y, x, n := 0, 0, 0
for y < p.innerArea.Dy() && n < len(cs) {
w := cs[n].Width()
if cs[n].Ch == '\n' || x+w > p.innerArea.Dx() {
y++
x = 0 // set x = 0
if cs[n].Ch == '\n' {
n++
}
if y >= p.innerArea.Dy() {
buf.Set(p.innerArea.Min.X+p.innerArea.Dx()-1,
p.innerArea.Min.Y+p.innerArea.Dy()-1,
Cell{Ch: '…', Fg: p.TextFgColor, Bg: p.TextBgColor})
break
}
continue
}
buf.Set(p.innerArea.Min.X+x, p.innerArea.Min.Y+y, cs[n])
n++
x += w
}
return buf
}

78
vendor/github.com/gizak/termui/pos.go generated vendored
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@ -1,78 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import "image"
// Align is the position of the gauge's label.
type Align uint
// All supported positions.
const (
AlignNone Align = 0
AlignLeft Align = 1 << iota
AlignRight
AlignBottom
AlignTop
AlignCenterVertical
AlignCenterHorizontal
AlignCenter = AlignCenterVertical | AlignCenterHorizontal
)
func AlignArea(parent, child image.Rectangle, a Align) image.Rectangle {
w, h := child.Dx(), child.Dy()
// parent center
pcx, pcy := parent.Min.X+parent.Dx()/2, parent.Min.Y+parent.Dy()/2
// child center
ccx, ccy := child.Min.X+child.Dx()/2, child.Min.Y+child.Dy()/2
if a&AlignLeft == AlignLeft {
child.Min.X = parent.Min.X
child.Max.X = child.Min.X + w
}
if a&AlignRight == AlignRight {
child.Max.X = parent.Max.X
child.Min.X = child.Max.X - w
}
if a&AlignBottom == AlignBottom {
child.Max.Y = parent.Max.Y
child.Min.Y = child.Max.Y - h
}
if a&AlignTop == AlignRight {
child.Min.Y = parent.Min.Y
child.Max.Y = child.Min.Y + h
}
if a&AlignCenterHorizontal == AlignCenterHorizontal {
child.Min.X += pcx - ccx
child.Max.X = child.Min.X + w
}
if a&AlignCenterVertical == AlignCenterVertical {
child.Min.Y += pcy - ccy
child.Max.Y = child.Min.Y + h
}
return child
}
func MoveArea(a image.Rectangle, dx, dy int) image.Rectangle {
a.Min.X += dx
a.Max.X += dx
a.Min.Y += dy
a.Max.Y += dy
return a
}
var termWidth int
var termHeight int
func TermRect() image.Rectangle {
return image.Rect(0, 0, termWidth, termHeight)
}

164
vendor/github.com/gizak/termui/render.go generated vendored
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@ -1,164 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import (
"image"
"io"
"sync"
"time"
"fmt"
"os"
"runtime/debug"
"bytes"
"github.com/maruel/panicparse/stack"
tm "github.com/nsf/termbox-go"
)
// Bufferer should be implemented by all renderable components.
type Bufferer interface {
Buffer() Buffer
}
// Init initializes termui library. This function should be called before any others.
// After initialization, the library must be finalized by 'Close' function.
func Init() error {
if err := tm.Init(); err != nil {
return err
}
sysEvtChs = make([]chan Event, 0)
go hookTermboxEvt()
renderJobs = make(chan []Bufferer)
//renderLock = new(sync.RWMutex)
Body = NewGrid()
Body.X = 0
Body.Y = 0
Body.BgColor = ThemeAttr("bg")
Body.Width = TermWidth()
DefaultEvtStream.Init()
DefaultEvtStream.Merge("termbox", NewSysEvtCh())
DefaultEvtStream.Merge("timer", NewTimerCh(time.Second))
DefaultEvtStream.Merge("custom", usrEvtCh)
DefaultEvtStream.Handle("/", DefaultHandler)
DefaultEvtStream.Handle("/sys/wnd/resize", func(e Event) {
w := e.Data.(EvtWnd)
Body.Width = w.Width
})
DefaultWgtMgr = NewWgtMgr()
DefaultEvtStream.Hook(DefaultWgtMgr.WgtHandlersHook())
go func() {
for bs := range renderJobs {
render(bs...)
}
}()
return nil
}
// Close finalizes termui library,
// should be called after successful initialization when termui's functionality isn't required anymore.
func Close() {
tm.Close()
}
var renderLock sync.Mutex
func termSync() {
renderLock.Lock()
tm.Sync()
termWidth, termHeight = tm.Size()
renderLock.Unlock()
}
// TermWidth returns the current terminal's width.
func TermWidth() int {
termSync()
return termWidth
}
// TermHeight returns the current terminal's height.
func TermHeight() int {
termSync()
return termHeight
}
// Render renders all Bufferer in the given order from left to right,
// right could overlap on left ones.
func render(bs ...Bufferer) {
defer func() {
if e := recover(); e != nil {
Close()
fmt.Fprintf(os.Stderr, "Captured a panic(value=%v) when rendering Bufferer. Exit termui and clean terminal...\nPrint stack trace:\n\n", e)
//debug.PrintStack()
gs, err := stack.ParseDump(bytes.NewReader(debug.Stack()), os.Stderr)
if err != nil {
debug.PrintStack()
os.Exit(1)
}
p := &stack.Palette{}
buckets := stack.SortBuckets(stack.Bucketize(gs, stack.AnyValue))
srcLen, pkgLen := stack.CalcLengths(buckets, false)
for _, bucket := range buckets {
io.WriteString(os.Stdout, p.BucketHeader(&bucket, false, len(buckets) > 1))
io.WriteString(os.Stdout, p.StackLines(&bucket.Signature, srcLen, pkgLen, false))
}
os.Exit(1)
}
}()
for _, b := range bs {
buf := b.Buffer()
// set cels in buf
for p, c := range buf.CellMap {
if p.In(buf.Area) {
tm.SetCell(p.X, p.Y, c.Ch, toTmAttr(c.Fg), toTmAttr(c.Bg))
}
}
}
renderLock.Lock()
// render
tm.Flush()
renderLock.Unlock()
}
func Clear() {
tm.Clear(tm.ColorDefault, toTmAttr(ThemeAttr("bg")))
}
func clearArea(r image.Rectangle, bg Attribute) {
for i := r.Min.X; i < r.Max.X; i++ {
for j := r.Min.Y; j < r.Max.Y; j++ {
tm.SetCell(i, j, ' ', tm.ColorDefault, toTmAttr(bg))
}
}
}
func ClearArea(r image.Rectangle, bg Attribute) {
clearArea(r, bg)
tm.Flush()
}
var renderJobs chan []Bufferer
func Render(bs ...Bufferer) {
//go func() { renderJobs <- bs }()
renderJobs <- bs
}

167
vendor/github.com/gizak/termui/sparkline.go generated vendored
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@ -1,167 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
// Sparkline is like: ▅▆▂▂▅▇▂▂▃▆▆▆▅▃. The data points should be non-negative integers.
/*
data := []int{4, 2, 1, 6, 3, 9, 1, 4, 2, 15, 14, 9, 8, 6, 10, 13, 15, 12, 10, 5, 3, 6, 1}
spl := termui.NewSparkline()
spl.Data = data
spl.Title = "Sparkline 0"
spl.LineColor = termui.ColorGreen
*/
type Sparkline struct {
Data []int
Height int
Title string
TitleColor Attribute
LineColor Attribute
displayHeight int
scale float32
max int
}
// Sparklines is a renderable widget which groups together the given sparklines.
/*
spls := termui.NewSparklines(spl0,spl1,spl2) //...
spls.Height = 2
spls.Width = 20
*/
type Sparklines struct {
Block
Lines []Sparkline
displayLines int
displayWidth int
}
var sparks = []rune{'▁', '▂', '▃', '▄', '▅', '▆', '▇', '█'}
// Add appends a given Sparkline to s *Sparklines.
func (s *Sparklines) Add(sl Sparkline) {
s.Lines = append(s.Lines, sl)
}
// NewSparkline returns a unrenderable single sparkline that intended to be added into Sparklines.
func NewSparkline() Sparkline {
return Sparkline{
Height: 1,
TitleColor: ThemeAttr("sparkline.title.fg"),
LineColor: ThemeAttr("sparkline.line.fg")}
}
// NewSparklines return a new *Spaklines with given Sparkline(s), you can always add a new Sparkline later.
func NewSparklines(ss ...Sparkline) *Sparklines {
s := &Sparklines{Block: *NewBlock(), Lines: ss}
return s
}
func (sl *Sparklines) update() {
for i, v := range sl.Lines {
if v.Title == "" {
sl.Lines[i].displayHeight = v.Height
} else {
sl.Lines[i].displayHeight = v.Height + 1
}
}
sl.displayWidth = sl.innerArea.Dx()
// get how many lines gotta display
h := 0
sl.displayLines = 0
for _, v := range sl.Lines {
if h+v.displayHeight <= sl.innerArea.Dy() {
sl.displayLines++
} else {
break
}
h += v.displayHeight
}
for i := 0; i < sl.displayLines; i++ {
data := sl.Lines[i].Data
max := 0
for _, v := range data {
if max < v {
max = v
}
}
sl.Lines[i].max = max
if max != 0 {
sl.Lines[i].scale = float32(8*sl.Lines[i].Height) / float32(max)
} else { // when all negative
sl.Lines[i].scale = 0
}
}
}
// Buffer implements Bufferer interface.
func (sl *Sparklines) Buffer() Buffer {
buf := sl.Block.Buffer()
sl.update()
oftY := 0
for i := 0; i < sl.displayLines; i++ {
l := sl.Lines[i]
data := l.Data
if len(data) > sl.innerArea.Dx() {
data = data[len(data)-sl.innerArea.Dx():]
}
if l.Title != "" {
rs := trimStr2Runes(l.Title, sl.innerArea.Dx())
oftX := 0
for _, v := range rs {
w := charWidth(v)
c := Cell{
Ch: v,
Fg: l.TitleColor,
Bg: sl.Bg,
}
x := sl.innerArea.Min.X + oftX
y := sl.innerArea.Min.Y + oftY
buf.Set(x, y, c)
oftX += w
}
}
for j, v := range data {
// display height of the data point, zero when data is negative
h := int(float32(v)*l.scale + 0.5)
if v < 0 {
h = 0
}
barCnt := h / 8
barMod := h % 8
for jj := 0; jj < barCnt; jj++ {
c := Cell{
Ch: ' ', // => sparks[7]
Bg: l.LineColor,
}
x := sl.innerArea.Min.X + j
y := sl.innerArea.Min.Y + oftY + l.Height - jj
//p.Bg = sl.BgColor
buf.Set(x, y, c)
}
if barMod != 0 {
c := Cell{
Ch: sparks[barMod-1],
Fg: l.LineColor,
Bg: sl.Bg,
}
x := sl.innerArea.Min.X + j
y := sl.innerArea.Min.Y + oftY + l.Height - barCnt
buf.Set(x, y, c)
}
}
oftY += l.displayHeight
}
return buf
}

185
vendor/github.com/gizak/termui/table.go generated vendored
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@ -1,185 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import "strings"
/* Table is like:
┌Awesome Table ────────────────────────────────────────────────┐
│ Col0 | Col1 | Col2 | Col3 | Col4 | Col5 | Col6 |
│──────────────────────────────────────────────────────────────│
│ Some Item #1 | AAA | 123 | CCCCC | EEEEE | GGGGG | IIIII |
│──────────────────────────────────────────────────────────────│
│ Some Item #2 | BBB | 456 | DDDDD | FFFFF | HHHHH | JJJJJ |
└──────────────────────────────────────────────────────────────┘
Datapoints are a two dimensional array of strings: [][]string
Example:
data := [][]string{
{"Col0", "Col1", "Col3", "Col4", "Col5", "Col6"},
{"Some Item #1", "AAA", "123", "CCCCC", "EEEEE", "GGGGG", "IIIII"},
{"Some Item #2", "BBB", "456", "DDDDD", "FFFFF", "HHHHH", "JJJJJ"},
}
table := termui.NewTable()
table.Rows = data // type [][]string
table.FgColor = termui.ColorWhite
table.BgColor = termui.ColorDefault
table.Height = 7
table.Width = 62
table.Y = 0
table.X = 0
table.Border = true
*/
// Table tracks all the attributes of a Table instance
type Table struct {
Block
Rows [][]string
CellWidth []int
FgColor Attribute
BgColor Attribute
FgColors []Attribute
BgColors []Attribute
Separator bool
TextAlign Align
}
// NewTable returns a new Table instance
func NewTable() *Table {
table := &Table{Block: *NewBlock()}
table.FgColor = ColorWhite
table.BgColor = ColorDefault
table.Separator = true
return table
}
// CellsWidth calculates the width of a cell array and returns an int
func cellsWidth(cells []Cell) int {
width := 0
for _, c := range cells {
width += c.Width()
}
return width
}
// Analysis generates and returns an array of []Cell that represent all columns in the Table
func (table *Table) Analysis() [][]Cell {
var rowCells [][]Cell
length := len(table.Rows)
if length < 1 {
return rowCells
}
if len(table.FgColors) == 0 {
table.FgColors = make([]Attribute, len(table.Rows))
}
if len(table.BgColors) == 0 {
table.BgColors = make([]Attribute, len(table.Rows))
}
cellWidths := make([]int, len(table.Rows[0]))
for y, row := range table.Rows {
if table.FgColors[y] == 0 {
table.FgColors[y] = table.FgColor
}
if table.BgColors[y] == 0 {
table.BgColors[y] = table.BgColor
}
for x, str := range row {
cells := DefaultTxBuilder.Build(str, table.FgColors[y], table.BgColors[y])
cw := cellsWidth(cells)
if cellWidths[x] < cw {
cellWidths[x] = cw
}
rowCells = append(rowCells, cells)
}
}
table.CellWidth = cellWidths
return rowCells
}
// SetSize calculates the table size and sets the internal value
func (table *Table) SetSize() {
length := len(table.Rows)
if table.Separator {
table.Height = length*2 + 1
} else {
table.Height = length + 2
}
table.Width = 2
if length != 0 {
for _, cellWidth := range table.CellWidth {
table.Width += cellWidth + 3
}
}
}
// CalculatePosition ...
func (table *Table) CalculatePosition(x int, y int, coordinateX *int, coordinateY *int, cellStart *int) {
if table.Separator {
*coordinateY = table.innerArea.Min.Y + y*2
} else {
*coordinateY = table.innerArea.Min.Y + y
}
if x == 0 {
*cellStart = table.innerArea.Min.X
} else {
*cellStart += table.CellWidth[x-1] + 3
}
switch table.TextAlign {
case AlignRight:
*coordinateX = *cellStart + (table.CellWidth[x] - len(table.Rows[y][x])) + 2
case AlignCenter:
*coordinateX = *cellStart + (table.CellWidth[x]-len(table.Rows[y][x]))/2 + 2
default:
*coordinateX = *cellStart + 2
}
}
// Buffer ...
func (table *Table) Buffer() Buffer {
buffer := table.Block.Buffer()
rowCells := table.Analysis()
pointerX := table.innerArea.Min.X + 2
pointerY := table.innerArea.Min.Y
borderPointerX := table.innerArea.Min.X
for y, row := range table.Rows {
for x := range row {
table.CalculatePosition(x, y, &pointerX, &pointerY, &borderPointerX)
background := DefaultTxBuilder.Build(strings.Repeat(" ", table.CellWidth[x]+3), table.BgColors[y], table.BgColors[y])
cells := rowCells[y*len(row)+x]
for i, back := range background {
buffer.Set(borderPointerX+i, pointerY, back)
}
coordinateX := pointerX
for _, printer := range cells {
buffer.Set(coordinateX, pointerY, printer)
coordinateX += printer.Width()
}
if x != 0 {
dividors := DefaultTxBuilder.Build("|", table.FgColors[y], table.BgColors[y])
for _, dividor := range dividors {
buffer.Set(borderPointerX, pointerY, dividor)
}
}
}
if table.Separator {
border := DefaultTxBuilder.Build(strings.Repeat("─", table.Width-2), table.FgColor, table.BgColor)
for i, cell := range border {
buffer.Set(i+1, pointerY+1, cell)
}
}
}
return buffer
}

278
vendor/github.com/gizak/termui/textbuilder.go generated vendored
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@ -1,278 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import (
"regexp"
"strings"
"github.com/mitchellh/go-wordwrap"
)
// TextBuilder is a minimal interface to produce text []Cell using specific syntax (markdown).
type TextBuilder interface {
Build(s string, fg, bg Attribute) []Cell
}
// DefaultTxBuilder is set to be MarkdownTxBuilder.
var DefaultTxBuilder = NewMarkdownTxBuilder()
// MarkdownTxBuilder implements TextBuilder interface, using markdown syntax.
type MarkdownTxBuilder struct {
baseFg Attribute
baseBg Attribute
plainTx []rune
markers []marker
}
type marker struct {
st int
ed int
fg Attribute
bg Attribute
}
var colorMap = map[string]Attribute{
"red": ColorRed,
"blue": ColorBlue,
"black": ColorBlack,
"cyan": ColorCyan,
"yellow": ColorYellow,
"white": ColorWhite,
"default": ColorDefault,
"green": ColorGreen,
"magenta": ColorMagenta,
}
var attrMap = map[string]Attribute{
"bold": AttrBold,
"underline": AttrUnderline,
"reverse": AttrReverse,
}
func rmSpc(s string) string {
reg := regexp.MustCompile(`\s+`)
return reg.ReplaceAllString(s, "")
}
// readAttr translates strings like `fg-red,fg-bold,bg-white` to fg and bg Attribute
func (mtb MarkdownTxBuilder) readAttr(s string) (Attribute, Attribute) {
fg := mtb.baseFg
bg := mtb.baseBg
updateAttr := func(a Attribute, attrs []string) Attribute {
for _, s := range attrs {
// replace the color
if c, ok := colorMap[s]; ok {
a &= 0xFF00 // erase clr 0 ~ 8 bits
a |= c // set clr
}
// add attrs
if c, ok := attrMap[s]; ok {
a |= c
}
}
return a
}
ss := strings.Split(s, ",")
fgs := []string{}
bgs := []string{}
for _, v := range ss {
subs := strings.Split(v, "-")
if len(subs) > 1 {
if subs[0] == "fg" {
fgs = append(fgs, subs[1])
}
if subs[0] == "bg" {
bgs = append(bgs, subs[1])
}
}
}
fg = updateAttr(fg, fgs)
bg = updateAttr(bg, bgs)
return fg, bg
}
func (mtb *MarkdownTxBuilder) reset() {
mtb.plainTx = []rune{}
mtb.markers = []marker{}
}
// parse streams and parses text into normalized text and render sequence.
func (mtb *MarkdownTxBuilder) parse(str string) {
rs := str2runes(str)
normTx := []rune{}
square := []rune{}
brackt := []rune{}
accSquare := false
accBrackt := false
cntSquare := 0
reset := func() {
square = []rune{}
brackt = []rune{}
accSquare = false
accBrackt = false
cntSquare = 0
}
// pipe stacks into normTx and clear
rollback := func() {
normTx = append(normTx, square...)
normTx = append(normTx, brackt...)
reset()
}
// chop first and last
chop := func(s []rune) []rune {
return s[1 : len(s)-1]
}
for i, r := range rs {
switch {
// stacking brackt
case accBrackt:
brackt = append(brackt, r)
if ')' == r {
fg, bg := mtb.readAttr(string(chop(brackt)))
st := len(normTx)
ed := len(normTx) + len(square) - 2
mtb.markers = append(mtb.markers, marker{st, ed, fg, bg})
normTx = append(normTx, chop(square)...)
reset()
} else if i+1 == len(rs) {
rollback()
}
// stacking square
case accSquare:
switch {
// squares closed and followed by a '('
case cntSquare == 0 && '(' == r:
accBrackt = true
brackt = append(brackt, '(')
// squares closed but not followed by a '('
case cntSquare == 0:
rollback()
if '[' == r {
accSquare = true
cntSquare = 1
brackt = append(brackt, '[')
} else {
normTx = append(normTx, r)
}
// hit the end
case i+1 == len(rs):
square = append(square, r)
rollback()
case '[' == r:
cntSquare++
square = append(square, '[')
case ']' == r:
cntSquare--
square = append(square, ']')
// normal char
default:
square = append(square, r)
}
// stacking normTx
default:
if '[' == r {
accSquare = true
cntSquare = 1
square = append(square, '[')
} else {
normTx = append(normTx, r)
}
}
}
mtb.plainTx = normTx
}
func wrapTx(cs []Cell, wl int) []Cell {
tmpCell := make([]Cell, len(cs))
copy(tmpCell, cs)
// get the plaintext
plain := CellsToStr(cs)
// wrap
plainWrapped := wordwrap.WrapString(plain, uint(wl))
// find differences and insert
finalCell := tmpCell // finalcell will get the inserts and is what is returned
plainRune := []rune(plain)
plainWrappedRune := []rune(plainWrapped)
trigger := "go"
plainRuneNew := plainRune
for trigger != "stop" {
plainRune = plainRuneNew
for i := range plainRune {
if plainRune[i] == plainWrappedRune[i] {
trigger = "stop"
} else if plainRune[i] != plainWrappedRune[i] && plainWrappedRune[i] == 10 {
trigger = "go"
cell := Cell{10, 0, 0}
j := i - 0
// insert a cell into the []Cell in correct position
tmpCell[i] = cell
// insert the newline into plain so we avoid indexing errors
plainRuneNew = append(plainRune, 10)
copy(plainRuneNew[j+1:], plainRuneNew[j:])
plainRuneNew[j] = plainWrappedRune[j]
// restart the inner for loop until plain and plain wrapped are
// the same; yeah, it's inefficient, but the text amounts
// should be small
break
} else if plainRune[i] != plainWrappedRune[i] &&
plainWrappedRune[i-1] == 10 && // if the prior rune is a newline
plainRune[i] == 32 { // and this rune is a space
trigger = "go"
// need to delete plainRune[i] because it gets rid of an extra
// space
plainRuneNew = append(plainRune[:i], plainRune[i+1:]...)
break
} else {
trigger = "stop" // stops the outer for loop
}
}
}
finalCell = tmpCell
return finalCell
}
// Build implements TextBuilder interface.
func (mtb MarkdownTxBuilder) Build(s string, fg, bg Attribute) []Cell {
mtb.baseFg = fg
mtb.baseBg = bg
mtb.reset()
mtb.parse(s)
cs := make([]Cell, len(mtb.plainTx))
for i := range cs {
cs[i] = Cell{Ch: mtb.plainTx[i], Fg: fg, Bg: bg}
}
for _, mrk := range mtb.markers {
for i := mrk.st; i < mrk.ed; i++ {
cs[i].Fg = mrk.fg
cs[i].Bg = mrk.bg
}
}
return cs
}
// NewMarkdownTxBuilder returns a TextBuilder employing markdown syntax.
func NewMarkdownTxBuilder() TextBuilder {
return MarkdownTxBuilder{}
}

140
vendor/github.com/gizak/termui/theme.go generated vendored
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@ -1,140 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import "strings"
/*
// A ColorScheme represents the current look-and-feel of the dashboard.
type ColorScheme struct {
BodyBg Attribute
BlockBg Attribute
HasBorder bool
BorderFg Attribute
BorderBg Attribute
BorderLabelTextFg Attribute
BorderLabelTextBg Attribute
ParTextFg Attribute
ParTextBg Attribute
SparklineLine Attribute
SparklineTitle Attribute
GaugeBar Attribute
GaugePercent Attribute
LineChartLine Attribute
LineChartAxes Attribute
ListItemFg Attribute
ListItemBg Attribute
BarChartBar Attribute
BarChartText Attribute
BarChartNum Attribute
MBarChartBar Attribute
MBarChartText Attribute
MBarChartNum Attribute
TabActiveBg Attribute
}
// default color scheme depends on the user's terminal setting.
var themeDefault = ColorScheme{HasBorder: true}
var themeHelloWorld = ColorScheme{
BodyBg: ColorBlack,
BlockBg: ColorBlack,
HasBorder: true,
BorderFg: ColorWhite,
BorderBg: ColorBlack,
BorderLabelTextBg: ColorBlack,
BorderLabelTextFg: ColorGreen,
ParTextBg: ColorBlack,
ParTextFg: ColorWhite,
SparklineLine: ColorMagenta,
SparklineTitle: ColorWhite,
GaugeBar: ColorRed,
GaugePercent: ColorWhite,
LineChartLine: ColorYellow | AttrBold,
LineChartAxes: ColorWhite,
ListItemBg: ColorBlack,
ListItemFg: ColorYellow,
BarChartBar: ColorRed,
BarChartNum: ColorWhite,
BarChartText: ColorCyan,
MBarChartBar: ColorRed,
MBarChartNum: ColorWhite,
MBarChartText: ColorCyan,
TabActiveBg: ColorMagenta,
}
var theme = themeDefault // global dep
// Theme returns the currently used theme.
func Theme() ColorScheme {
return theme
}
// SetTheme sets a new, custom theme.
func SetTheme(newTheme ColorScheme) {
theme = newTheme
}
// UseTheme sets a predefined scheme. Currently available: "hello-world" and
// "black-and-white".
func UseTheme(th string) {
switch th {
case "helloworld":
theme = themeHelloWorld
default:
theme = themeDefault
}
}
*/
var ColorMap = map[string]Attribute{
"fg": ColorWhite,
"bg": ColorDefault,
"border.fg": ColorWhite,
"label.fg": ColorGreen,
"par.fg": ColorYellow,
"par.label.bg": ColorWhite,
}
func ThemeAttr(name string) Attribute {
return lookUpAttr(ColorMap, name)
}
func lookUpAttr(clrmap map[string]Attribute, name string) Attribute {
a, ok := clrmap[name]
if ok {
return a
}
ns := strings.Split(name, ".")
for i := range ns {
nn := strings.Join(ns[i:len(ns)], ".")
a, ok = ColorMap[nn]
if ok {
break
}
}
return a
}
// 0<=r,g,b <= 5
func ColorRGB(r, g, b int) Attribute {
within := func(n int) int {
if n < 0 {
return 0
}
if n > 5 {
return 5
}
return n
}
r, b, g = within(r), within(b), within(g)
return Attribute(0x0f + 36*r + 6*g + b)
}

94
vendor/github.com/gizak/termui/widget.go generated vendored
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@ -1,94 +0,0 @@
// Copyright 2017 Zack Guo <zack.y.guo@gmail.com>. All rights reserved.
// Use of this source code is governed by a MIT license that can
// be found in the LICENSE file.
package termui
import (
"fmt"
"sync"
)
// event mixins
type WgtMgr map[string]WgtInfo
type WgtInfo struct {
Handlers map[string]func(Event)
WgtRef Widget
Id string
}
type Widget interface {
Id() string
}
func NewWgtInfo(wgt Widget) WgtInfo {
return WgtInfo{
Handlers: make(map[string]func(Event)),
WgtRef: wgt,
Id: wgt.Id(),
}
}
func NewWgtMgr() WgtMgr {
wm := WgtMgr(make(map[string]WgtInfo))
return wm
}
func (wm WgtMgr) AddWgt(wgt Widget) {
wm[wgt.Id()] = NewWgtInfo(wgt)
}
func (wm WgtMgr) RmWgt(wgt Widget) {
wm.RmWgtById(wgt.Id())
}
func (wm WgtMgr) RmWgtById(id string) {
delete(wm, id)
}
func (wm WgtMgr) AddWgtHandler(id, path string, h func(Event)) {
if w, ok := wm[id]; ok {
w.Handlers[path] = h
}
}
func (wm WgtMgr) RmWgtHandler(id, path string) {
if w, ok := wm[id]; ok {
delete(w.Handlers, path)
}
}
var counter struct {
sync.RWMutex
count int
}
func GenId() string {
counter.Lock()
defer counter.Unlock()
counter.count += 1
return fmt.Sprintf("%d", counter.count)
}
func (wm WgtMgr) WgtHandlersHook() func(Event) {
return func(e Event) {
for _, v := range wm {
if k := findMatch(v.Handlers, e.Path); k != "" {
v.Handlers[k](e)
}
}
}
}
var DefaultWgtMgr WgtMgr
func (b *Block) Handle(path string, handler func(Event)) {
if _, ok := DefaultWgtMgr[b.Id()]; !ok {
DefaultWgtMgr.AddWgt(b)
}
DefaultWgtMgr.AddWgtHandler(b.Id(), path, handler)
}

635
vendor/github.com/influxdata/influxdb/client/v2/client.go generated vendored
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@ -1,635 +0,0 @@
// Package client (v2) is the current official Go client for InfluxDB.
package client // import "github.com/influxdata/influxdb/client/v2"
import (
"bytes"
"crypto/tls"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"mime"
"net/http"
"net/url"
"strconv"
"strings"
"time"
"github.com/influxdata/influxdb/models"
)
// HTTPConfig is the config data needed to create an HTTP Client.
type HTTPConfig struct {
// Addr should be of the form "http://host:port"
// or "http://[ipv6-host%zone]:port".
Addr string
// Username is the influxdb username, optional.
Username string
// Password is the influxdb password, optional.
Password string
// UserAgent is the http User Agent, defaults to "InfluxDBClient".
UserAgent string
// Timeout for influxdb writes, defaults to no timeout.
Timeout time.Duration
// InsecureSkipVerify gets passed to the http client, if true, it will
// skip https certificate verification. Defaults to false.
InsecureSkipVerify bool
// TLSConfig allows the user to set their own TLS config for the HTTP
// Client. If set, this option overrides InsecureSkipVerify.
TLSConfig *tls.Config
}
// BatchPointsConfig is the config data needed to create an instance of the BatchPoints struct.
type BatchPointsConfig struct {
// Precision is the write precision of the points, defaults to "ns".
Precision string
// Database is the database to write points to.
Database string
// RetentionPolicy is the retention policy of the points.
RetentionPolicy string
// Write consistency is the number of servers required to confirm write.
WriteConsistency string
}
// Client is a client interface for writing & querying the database.
type Client interface {
// Ping checks that status of cluster, and will always return 0 time and no
// error for UDP clients.
Ping(timeout time.Duration) (time.Duration, string, error)
// Write takes a BatchPoints object and writes all Points to InfluxDB.
Write(bp BatchPoints) error
// Query makes an InfluxDB Query on the database. This will fail if using
// the UDP client.
Query(q Query) (*Response, error)
// Close releases any resources a Client may be using.
Close() error
}
// NewHTTPClient returns a new Client from the provided config.
// Client is safe for concurrent use by multiple goroutines.
func NewHTTPClient(conf HTTPConfig) (Client, error) {
if conf.UserAgent == "" {
conf.UserAgent = "InfluxDBClient"
}
u, err := url.Parse(conf.Addr)
if err != nil {
return nil, err
} else if u.Scheme != "http" && u.Scheme != "https" {
m := fmt.Sprintf("Unsupported protocol scheme: %s, your address"+
" must start with http:// or https://", u.Scheme)
return nil, errors.New(m)
}
tr := &http.Transport{
TLSClientConfig: &tls.Config{
InsecureSkipVerify: conf.InsecureSkipVerify,
},
}
if conf.TLSConfig != nil {
tr.TLSClientConfig = conf.TLSConfig
}
return &client{
url: *u,
username: conf.Username,
password: conf.Password,
useragent: conf.UserAgent,
httpClient: &http.Client{
Timeout: conf.Timeout,
Transport: tr,
},
transport: tr,
}, nil
}
// Ping will check to see if the server is up with an optional timeout on waiting for leader.
// Ping returns how long the request took, the version of the server it connected to, and an error if one occurred.
func (c *client) Ping(timeout time.Duration) (time.Duration, string, error) {
now := time.Now()
u := c.url
u.Path = "ping"
req, err := http.NewRequest("GET", u.String(), nil)
if err != nil {
return 0, "", err
}
req.Header.Set("User-Agent", c.useragent)
if c.username != "" {
req.SetBasicAuth(c.username, c.password)
}
if timeout > 0 {
params := req.URL.Query()
params.Set("wait_for_leader", fmt.Sprintf("%.0fs", timeout.Seconds()))
req.URL.RawQuery = params.Encode()
}
resp, err := c.httpClient.Do(req)
if err != nil {
return 0, "", err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return 0, "", err
}
if resp.StatusCode != http.StatusNoContent {
var err = fmt.Errorf(string(body))
return 0, "", err
}
version := resp.Header.Get("X-Influxdb-Version")
return time.Since(now), version, nil
}
// Close releases the client's resources.
func (c *client) Close() error {
c.transport.CloseIdleConnections()
return nil
}
// client is safe for concurrent use as the fields are all read-only
// once the client is instantiated.
type client struct {
// N.B - if url.UserInfo is accessed in future modifications to the
// methods on client, you will need to syncronise access to url.
url url.URL
username string
password string
useragent string
httpClient *http.Client
transport *http.Transport
}
// BatchPoints is an interface into a batched grouping of points to write into
// InfluxDB together. BatchPoints is NOT thread-safe, you must create a separate
// batch for each goroutine.
type BatchPoints interface {
// AddPoint adds the given point to the Batch of points.
AddPoint(p *Point)
// AddPoints adds the given points to the Batch of points.
AddPoints(ps []*Point)
// Points lists the points in the Batch.
Points() []*Point
// Precision returns the currently set precision of this Batch.
Precision() string
// SetPrecision sets the precision of this batch.
SetPrecision(s string) error
// Database returns the currently set database of this Batch.
Database() string
// SetDatabase sets the database of this Batch.
SetDatabase(s string)
// WriteConsistency returns the currently set write consistency of this Batch.
WriteConsistency() string
// SetWriteConsistency sets the write consistency of this Batch.
SetWriteConsistency(s string)
// RetentionPolicy returns the currently set retention policy of this Batch.
RetentionPolicy() string
// SetRetentionPolicy sets the retention policy of this Batch.
SetRetentionPolicy(s string)
}
// NewBatchPoints returns a BatchPoints interface based on the given config.
func NewBatchPoints(conf BatchPointsConfig) (BatchPoints, error) {
if conf.Precision == "" {
conf.Precision = "ns"
}
if _, err := time.ParseDuration("1" + conf.Precision); err != nil {
return nil, err
}
bp := &batchpoints{
database: conf.Database,
precision: conf.Precision,
retentionPolicy: conf.RetentionPolicy,
writeConsistency: conf.WriteConsistency,
}
return bp, nil
}
type batchpoints struct {
points []*Point
database string
precision string
retentionPolicy string
writeConsistency string
}
func (bp *batchpoints) AddPoint(p *Point) {
bp.points = append(bp.points, p)
}
func (bp *batchpoints) AddPoints(ps []*Point) {
bp.points = append(bp.points, ps...)
}
func (bp *batchpoints) Points() []*Point {
return bp.points
}
func (bp *batchpoints) Precision() string {
return bp.precision
}
func (bp *batchpoints) Database() string {
return bp.database
}
func (bp *batchpoints) WriteConsistency() string {
return bp.writeConsistency
}
func (bp *batchpoints) RetentionPolicy() string {
return bp.retentionPolicy
}
func (bp *batchpoints) SetPrecision(p string) error {
if _, err := time.ParseDuration("1" + p); err != nil {
return err
}
bp.precision = p
return nil
}
func (bp *batchpoints) SetDatabase(db string) {
bp.database = db
}
func (bp *batchpoints) SetWriteConsistency(wc string) {
bp.writeConsistency = wc
}
func (bp *batchpoints) SetRetentionPolicy(rp string) {
bp.retentionPolicy = rp
}
// Point represents a single data point.
type Point struct {
pt models.Point
}
// NewPoint returns a point with the given timestamp. If a timestamp is not
// given, then data is sent to the database without a timestamp, in which case
// the server will assign local time upon reception. NOTE: it is recommended to
// send data with a timestamp.
func NewPoint(
name string,
tags map[string]string,
fields map[string]interface{},
t ...time.Time,
) (*Point, error) {
var T time.Time
if len(t) > 0 {
T = t[0]
}
pt, err := models.NewPoint(name, models.NewTags(tags), fields, T)
if err != nil {
return nil, err
}
return &Point{
pt: pt,
}, nil
}
// String returns a line-protocol string of the Point.
func (p *Point) String() string {
return p.pt.String()
}
// PrecisionString returns a line-protocol string of the Point,
// with the timestamp formatted for the given precision.
func (p *Point) PrecisionString(precison string) string {
return p.pt.PrecisionString(precison)
}
// Name returns the measurement name of the point.
func (p *Point) Name() string {
return string(p.pt.Name())
}
// Tags returns the tags associated with the point.
func (p *Point) Tags() map[string]string {
return p.pt.Tags().Map()
}
// Time return the timestamp for the point.
func (p *Point) Time() time.Time {
return p.pt.Time()
}
// UnixNano returns timestamp of the point in nanoseconds since Unix epoch.
func (p *Point) UnixNano() int64 {
return p.pt.UnixNano()
}
// Fields returns the fields for the point.
func (p *Point) Fields() (map[string]interface{}, error) {
return p.pt.Fields()
}
// NewPointFrom returns a point from the provided models.Point.
func NewPointFrom(pt models.Point) *Point {
return &Point{pt: pt}
}
func (c *client) Write(bp BatchPoints) error {
var b bytes.Buffer
for _, p := range bp.Points() {
if _, err := b.WriteString(p.pt.PrecisionString(bp.Precision())); err != nil {
return err
}
if err := b.WriteByte('\n'); err != nil {
return err
}
}
u := c.url
u.Path = "write"
req, err := http.NewRequest("POST", u.String(), &b)
if err != nil {
return err
}
req.Header.Set("Content-Type", "")
req.Header.Set("User-Agent", c.useragent)
if c.username != "" {
req.SetBasicAuth(c.username, c.password)
}
params := req.URL.Query()
params.Set("db", bp.Database())
params.Set("rp", bp.RetentionPolicy())
params.Set("precision", bp.Precision())
params.Set("consistency", bp.WriteConsistency())
req.URL.RawQuery = params.Encode()
resp, err := c.httpClient.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return err
}
if resp.StatusCode != http.StatusNoContent && resp.StatusCode != http.StatusOK {
var err = fmt.Errorf(string(body))
return err
}
return nil
}
// Query defines a query to send to the server.
type Query struct {
Command string
Database string
Precision string
Chunked bool
ChunkSize int
Parameters map[string]interface{}
}
// NewQuery returns a query object.
// The database and precision arguments can be empty strings if they are not needed for the query.
func NewQuery(command, database, precision string) Query {
return Query{
Command: command,
Database: database,
Precision: precision,
Parameters: make(map[string]interface{}),
}
}
// NewQueryWithParameters returns a query object.
// The database and precision arguments can be empty strings if they are not needed for the query.
// parameters is a map of the parameter names used in the command to their values.
func NewQueryWithParameters(command, database, precision string, parameters map[string]interface{}) Query {
return Query{
Command: command,
Database: database,
Precision: precision,
Parameters: parameters,
}
}
// Response represents a list of statement results.
type Response struct {
Results []Result
Err string `json:"error,omitempty"`
}
// Error returns the first error from any statement.
// It returns nil if no errors occurred on any statements.
func (r *Response) Error() error {
if r.Err != "" {
return fmt.Errorf(r.Err)
}
for _, result := range r.Results {
if result.Err != "" {
return fmt.Errorf(result.Err)
}
}
return nil
}
// Message represents a user message.
type Message struct {
Level string
Text string
}
// Result represents a resultset returned from a single statement.
type Result struct {
Series []models.Row
Messages []*Message
Err string `json:"error,omitempty"`
}
// Query sends a command to the server and returns the Response.
func (c *client) Query(q Query) (*Response, error) {
u := c.url
u.Path = "query"
jsonParameters, err := json.Marshal(q.Parameters)
if err != nil {
return nil, err
}
req, err := http.NewRequest("POST", u.String(), nil)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "")
req.Header.Set("User-Agent", c.useragent)
if c.username != "" {
req.SetBasicAuth(c.username, c.password)
}
params := req.URL.Query()
params.Set("q", q.Command)
params.Set("db", q.Database)
params.Set("params", string(jsonParameters))
if q.Chunked {
params.Set("chunked", "true")
if q.ChunkSize > 0 {
params.Set("chunk_size", strconv.Itoa(q.ChunkSize))
}
}
if q.Precision != "" {
params.Set("epoch", q.Precision)
}
req.URL.RawQuery = params.Encode()
resp, err := c.httpClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
// If we lack a X-Influxdb-Version header, then we didn't get a response from influxdb
// but instead some other service. If the error code is also a 500+ code, then some
// downstream loadbalancer/proxy/etc had an issue and we should report that.
if resp.Header.Get("X-Influxdb-Version") == "" && resp.StatusCode >= http.StatusInternalServerError {
body, err := ioutil.ReadAll(resp.Body)
if err != nil || len(body) == 0 {
return nil, fmt.Errorf("received status code %d from downstream server", resp.StatusCode)
}
return nil, fmt.Errorf("received status code %d from downstream server, with response body: %q", resp.StatusCode, body)
}
// If we get an unexpected content type, then it is also not from influx direct and therefore
// we want to know what we received and what status code was returned for debugging purposes.
if cType, _, _ := mime.ParseMediaType(resp.Header.Get("Content-Type")); cType != "application/json" {
// Read up to 1kb of the body to help identify downstream errors and limit the impact of things
// like downstream serving a large file
body, err := ioutil.ReadAll(io.LimitReader(resp.Body, 1024))
if err != nil || len(body) == 0 {
return nil, fmt.Errorf("expected json response, got empty body, with status: %v", resp.StatusCode)
}
return nil, fmt.Errorf("expected json response, got %q, with status: %v and response body: %q", cType, resp.StatusCode, body)
}
var response Response
if q.Chunked {
cr := NewChunkedResponse(resp.Body)
for {
r, err := cr.NextResponse()
if err != nil {
// If we got an error while decoding the response, send that back.
return nil, err
}
if r == nil {
break
}
response.Results = append(response.Results, r.Results...)
if r.Err != "" {
response.Err = r.Err
break
}
}
} else {
dec := json.NewDecoder(resp.Body)
dec.UseNumber()
decErr := dec.Decode(&response)
// ignore this error if we got an invalid status code
if decErr != nil && decErr.Error() == "EOF" && resp.StatusCode != http.StatusOK {
decErr = nil
}
// If we got a valid decode error, send that back
if decErr != nil {
return nil, fmt.Errorf("unable to decode json: received status code %d err: %s", resp.StatusCode, decErr)
}
}
// If we don't have an error in our json response, and didn't get statusOK
// then send back an error
if resp.StatusCode != http.StatusOK && response.Error() == nil {
return &response, fmt.Errorf("received status code %d from server", resp.StatusCode)
}
return &response, nil
}
// duplexReader reads responses and writes it to another writer while
// satisfying the reader interface.
type duplexReader struct {
r io.Reader
w io.Writer
}
func (r *duplexReader) Read(p []byte) (n int, err error) {
n, err = r.r.Read(p)
if err == nil {
r.w.Write(p[:n])
}
return n, err
}
// ChunkedResponse represents a response from the server that
// uses chunking to stream the output.
type ChunkedResponse struct {
dec *json.Decoder
duplex *duplexReader
buf bytes.Buffer
}
// NewChunkedResponse reads a stream and produces responses from the stream.
func NewChunkedResponse(r io.Reader) *ChunkedResponse {
resp := &ChunkedResponse{}
resp.duplex = &duplexReader{r: r, w: &resp.buf}
resp.dec = json.NewDecoder(resp.duplex)
resp.dec.UseNumber()
return resp
}
// NextResponse reads the next line of the stream and returns a response.
func (r *ChunkedResponse) NextResponse() (*Response, error) {
var response Response
if err := r.dec.Decode(&response); err != nil {
if err == io.EOF {
return nil, nil
}
// A decoding error happened. This probably means the server crashed
// and sent a last-ditch error message to us. Ensure we have read the
// entirety of the connection to get any remaining error text.
io.Copy(ioutil.Discard, r.duplex)
return nil, errors.New(strings.TrimSpace(r.buf.String()))
}
r.buf.Reset()
return &response, nil
}

112
vendor/github.com/influxdata/influxdb/client/v2/udp.go generated vendored
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@ -1,112 +0,0 @@
package client
import (
"fmt"
"io"
"net"
"time"
)
const (
// UDPPayloadSize is a reasonable default payload size for UDP packets that
// could be travelling over the internet.
UDPPayloadSize = 512
)
// UDPConfig is the config data needed to create a UDP Client.
type UDPConfig struct {
// Addr should be of the form "host:port"
// or "[ipv6-host%zone]:port".
Addr string
// PayloadSize is the maximum size of a UDP client message, optional
// Tune this based on your network. Defaults to UDPPayloadSize.
PayloadSize int
}
// NewUDPClient returns a client interface for writing to an InfluxDB UDP
// service from the given config.
func NewUDPClient(conf UDPConfig) (Client, error) {
var udpAddr *net.UDPAddr
udpAddr, err := net.ResolveUDPAddr("udp", conf.Addr)
if err != nil {
return nil, err
}
conn, err := net.DialUDP("udp", nil, udpAddr)
if err != nil {
return nil, err
}
payloadSize := conf.PayloadSize
if payloadSize == 0 {
payloadSize = UDPPayloadSize
}
return &udpclient{
conn: conn,
payloadSize: payloadSize,
}, nil
}
// Close releases the udpclient's resources.
func (uc *udpclient) Close() error {
return uc.conn.Close()
}
type udpclient struct {
conn io.WriteCloser
payloadSize int
}
func (uc *udpclient) Write(bp BatchPoints) error {
var b = make([]byte, 0, uc.payloadSize) // initial buffer size, it will grow as needed
var d, _ = time.ParseDuration("1" + bp.Precision())
var delayedError error
var checkBuffer = func(n int) {
if len(b) > 0 && len(b)+n > uc.payloadSize {
if _, err := uc.conn.Write(b); err != nil {
delayedError = err
}
b = b[:0]
}
}
for _, p := range bp.Points() {
p.pt.Round(d)
pointSize := p.pt.StringSize() + 1 // include newline in size
//point := p.pt.RoundedString(d) + "\n"
checkBuffer(pointSize)
if p.Time().IsZero() || pointSize <= uc.payloadSize {
b = p.pt.AppendString(b)
b = append(b, '\n')
continue
}
points := p.pt.Split(uc.payloadSize - 1) // account for newline character
for _, sp := range points {
checkBuffer(sp.StringSize() + 1)
b = sp.AppendString(b)
b = append(b, '\n')
}
}
if len(b) > 0 {
if _, err := uc.conn.Write(b); err != nil {
return err
}
}
return delayedError
}
func (uc *udpclient) Query(q Query) (*Response, error) {
return nil, fmt.Errorf("Querying via UDP is not supported")
}
func (uc *udpclient) Ping(timeout time.Duration) (time.Duration, string, error) {
return 0, "", nil
}

15
vendor/github.com/maruel/panicparse/.travis.yml generated vendored
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@ -1,15 +0,0 @@
# Copyright 2014 Marc-Antoine Ruel. All rights reserved.
# Use of this source code is governed under the Apache License, Version 2.0
# that can be found in the LICENSE file.
sudo: false
language: go
go:
- tip
before_install:
- go get github.com/maruel/pre-commit-go/cmd/pcg
script:
- pcg

201
vendor/github.com/maruel/panicparse/LICENSE generated vendored
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@ -1,201 +0,0 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
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not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
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"Contributor" shall mean Licensor and any individual or Legal Entity
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with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright 2015 Marc-Antoine Ruel
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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panicparse
==========
Parses panic stack traces, densifies and deduplicates goroutines with similar
stack traces. Helps debugging crashes and deadlocks in heavily parallelized
process.
[![Build Status](https://travis-ci.org/maruel/panicparse.svg?branch=master)](https://travis-ci.org/maruel/panicparse)
panicparse helps make sense of Go crash dumps:
![Screencast](https://raw.githubusercontent.com/wiki/maruel/panicparse/parse.gif "Screencast")
Features
--------
* >50% more compact output than original stack dump yet more readable.
* Exported symbols are bold, private symbols are darker.
* Stdlib is green, main is yellow, rest is red.
* Deduplicates redundant goroutine stacks. Useful for large server crashes.
* Arguments as pointer IDs instead of raw pointer values.
* Pushes stdlib-only stacks at the bottom to help focus on important code.
* Usable as a library!
[![GoDoc](https://godoc.org/github.com/maruel/panicparse/stack?status.svg)](https://godoc.org/github.com/maruel/panicparse/stack)
* Warning: please pin the version (e.g. vendor it). Breaking changes are
not planned but may happen.
* Parses the source files if available to augment the output.
* Works on Windows.
Installation
------------
go get github.com/maruel/panicparse/cmd/pp
Usage
-----
### Piping a stack trace from another process
#### TL;DR
* Ubuntu (bash v4 or zsh): `|&`
* OSX, [install bash 4+](README.md#updating-bash-on-osx), then: `|&`
* Windows _or_ OSX with stock bash v3: `2>&1 |`
* [Fish](http://fishshell.com/) shell: `^|`
#### Longer version
`pp` streams its stdin to stdout as long as it doesn't detect any panic.
`panic()` and Go's native deadlock detector [print to
stderr](https://golang.org/src/runtime/panic1.go) via the native [`print()`
function](https://golang.org/pkg/builtin/#print).
**Bash v4** or **zsh**: `|&` tells the shell to redirect stderr to stdout,
it's an alias for `2>&1 |` ([bash
v4](https://www.gnu.org/software/bash/manual/bash.html#Pipelines),
[zsh](http://zsh.sourceforge.net/Doc/Release/Shell-Grammar.html#Simple-Commands-_0026-Pipelines)):
go test -v |&pp
**Windows or OSX native bash** [(which is
3.2.57)](http://meta.ath0.com/2012/02/05/apples-great-gpl-purge/): They don't
have this shortcut, so use the long form:
go test -v 2>&1 | pp
**Fish**: It uses [^ for stderr
redirection](http://fishshell.com/docs/current/tutorial.html#tut_pipes_and_redirections)
so the shortcut is `^|`:
go test -v ^|pp
**PowerShell**: [It has broken `2>&1` redirection](https://connect.microsoft.com/PowerShell/feedback/details/765551/in-powershell-v3-you-cant-redirect-stderr-to-stdout-without-generating-error-records). The workaround is to shell out to cmd.exe. :(
### Investigate deadlock
On POSIX, use `Ctrl-\` to send SIGQUIT to your process, `pp` will ignore
the signal and will parse the stack trace.
### Parsing from a file
To dump to a file then parse, pass the file path of a stack trace
go test 2> stack.txt
pp stack.txt
Tips
----
### GOTRACEBACK
Starting with Go 1.6, [`GOTRACEBACK`](https://golang.org/pkg/runtime/) defaults
to `single` instead of `all` / `1` that was used in 1.5 and before. To get all
goroutines trace and not just the crashing one, set the environment variable:
export GOTRACEBACK=all
or `set GOTRACEBACK=all` on Windows. Probably worth to put it in your `.bashrc`.
### Updating bash on OSX
Install bash v4+ on OSX via [homebrew](http://brew.sh) or
[macports](https://www.macports.org/). Your future self will appreciate having
done that.
### If you have `/usr/bin/pp` installed
You may have the Perl PAR Packager installed. Use long name `panicparse` then;
go get github.com/maruel/panicparse

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vendor/github.com/maruel/panicparse/stack/source.go generated vendored
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// Copyright 2015 Marc-Antoine Ruel. All rights reserved.
// Use of this source code is governed under the Apache License, Version 2.0
// that can be found in the LICENSE file.
// This file contains the code to process sources, to be able to deduct the
// original types.
package stack
import (
"bytes"
"fmt"
"go/ast"
"go/parser"
"go/token"
"io/ioutil"
"log"
"math"
"strings"
)
// cache is a cache of sources on the file system.
type cache struct {
files map[string][]byte
parsed map[string]*parsedFile
}
// Augment processes source files to improve calls to be more descriptive.
//
// It modifies goroutines in place.
func Augment(goroutines []Goroutine) {
c := &cache{}
for i := range goroutines {
c.augmentGoroutine(&goroutines[i])
}
}
// augmentGoroutine processes source files to improve call to be more
// descriptive.
//
// It modifies the routine.
func (c *cache) augmentGoroutine(goroutine *Goroutine) {
if c.files == nil {
c.files = map[string][]byte{}
}
if c.parsed == nil {
c.parsed = map[string]*parsedFile{}
}
// For each call site, look at the next call and populate it. Then we can
// walk back and reformat things.
for i := range goroutine.Stack.Calls {
c.load(goroutine.Stack.Calls[i].SourcePath)
}
// Once all loaded, we can look at the next call when available.
for i := 1; i < len(goroutine.Stack.Calls); i++ {
// Get the AST from the previous call and process the call line with it.
if f := c.getFuncAST(&goroutine.Stack.Calls[i]); f != nil {
processCall(&goroutine.Stack.Calls[i], f)
}
}
}
// Private stuff.
// load loads a source file and parses the AST tree. Failures are ignored.
func (c *cache) load(fileName string) {
if _, ok := c.parsed[fileName]; ok {
return
}
c.parsed[fileName] = nil
if !strings.HasSuffix(fileName, ".go") {
// Ignore C and assembly.
c.files[fileName] = nil
return
}
log.Printf("load(%s)", fileName)
if _, ok := c.files[fileName]; !ok {
var err error
if c.files[fileName], err = ioutil.ReadFile(fileName); err != nil {
log.Printf("Failed to read %s: %s", fileName, err)
c.files[fileName] = nil
return
}
}
fset := token.NewFileSet()
src := c.files[fileName]
parsed, err := parser.ParseFile(fset, fileName, src, 0)
if err != nil {
log.Printf("Failed to parse %s: %s", fileName, err)
return
}
// Convert the line number into raw file offset.
offsets := []int{0, 0}
start := 0
for l := 1; start < len(src); l++ {
start += bytes.IndexByte(src[start:], '\n') + 1
offsets = append(offsets, start)
}
c.parsed[fileName] = &parsedFile{offsets, parsed}
}
func (c *cache) getFuncAST(call *Call) *ast.FuncDecl {
if p := c.parsed[call.SourcePath]; p != nil {
return p.getFuncAST(call.Func.Name(), call.Line)
}
return nil
}
type parsedFile struct {
lineToByteOffset []int
parsed *ast.File
}
// getFuncAST gets the callee site function AST representation for the code
// inside the function f at line l.
func (p *parsedFile) getFuncAST(f string, l int) (d *ast.FuncDecl) {
// Walk the AST to find the lineToByteOffset that fits the line number.
var lastFunc *ast.FuncDecl
var found ast.Node
// Inspect() goes depth first. This means for example that a function like:
// func a() {
// b := func() {}
// c()
// }
//
// Were we are looking at the c() call can return confused values. It is
// important to look at the actual ast.Node hierarchy.
ast.Inspect(p.parsed, func(n ast.Node) bool {
if d != nil {
return false
}
if n == nil {
return true
}
if found != nil {
// We are walking up.
}
if int(n.Pos()) >= p.lineToByteOffset[l] {
// We are expecting a ast.CallExpr node. It can be harder to figure out
// when there are multiple calls on a single line, as the stack trace
// doesn't have file byte offset information, only line based.
// gofmt will always format to one function call per line but there can
// be edge cases, like:
// a = A{Foo(), Bar()}
d = lastFunc
//p.processNode(call, n)
return false
} else if f, ok := n.(*ast.FuncDecl); ok {
lastFunc = f
}
return true
})
return
}
func name(n ast.Node) string {
if _, ok := n.(*ast.InterfaceType); ok {
return "interface{}"
}
if i, ok := n.(*ast.Ident); ok {
return i.Name
}
if _, ok := n.(*ast.FuncType); ok {
return "func"
}
if s, ok := n.(*ast.SelectorExpr); ok {
return s.Sel.Name
}
// TODO(maruel): Implement anything missing.
return "<unknown>"
}
// fieldToType returns the type name and whether if it's an ellipsis.
func fieldToType(f *ast.Field) (string, bool) {
switch arg := f.Type.(type) {
case *ast.ArrayType:
return "[]" + name(arg.Elt), false
case *ast.Ellipsis:
return name(arg.Elt), true
case *ast.FuncType:
// Do not print the function signature to not overload the trace.
return "func", false
case *ast.Ident:
return arg.Name, false
case *ast.InterfaceType:
return "interface{}", false
case *ast.SelectorExpr:
return arg.Sel.Name, false
case *ast.StarExpr:
return "*" + name(arg.X), false
default:
// TODO(maruel): Implement anything missing.
return "<unknown>", false
}
}
// extractArgumentsType returns the name of the type of each input argument.
func extractArgumentsType(f *ast.FuncDecl) ([]string, bool) {
var fields []*ast.Field
if f.Recv != nil {
if len(f.Recv.List) != 1 {
panic("Expect only one receiver; please fix panicparse's code")
}
// If it is an object receiver (vs a pointer receiver), its address is not
// printed in the stack trace so it needs to be ignored.
if _, ok := f.Recv.List[0].Type.(*ast.StarExpr); ok {
fields = append(fields, f.Recv.List[0])
}
}
var types []string
extra := false
for _, arg := range append(fields, f.Type.Params.List...) {
// Assert that extra is only set on the last item of fields?
var t string
t, extra = fieldToType(arg)
mult := len(arg.Names)
if mult == 0 {
mult = 1
}
for i := 0; i < mult; i++ {
types = append(types, t)
}
}
return types, extra
}
// processCall walks the function and populate call accordingly.
func processCall(call *Call, f *ast.FuncDecl) {
values := make([]uint64, len(call.Args.Values))
for i := range call.Args.Values {
values[i] = call.Args.Values[i].Value
}
index := 0
pop := func() uint64 {
if len(values) != 0 {
x := values[0]
values = values[1:]
index++
return x
}
return 0
}
popName := func() string {
n := call.Args.Values[index].Name
v := pop()
if len(n) == 0 {
return fmt.Sprintf("0x%x", v)
}
return n
}
types, extra := extractArgumentsType(f)
for i := 0; len(values) != 0; i++ {
var t string
if i >= len(types) {
if !extra {
// These are unexpected value! Print them as hex.
call.Args.Processed = append(call.Args.Processed, popName())
continue
}
t = types[len(types)-1]
} else {
t = types[i]
}
switch t {
case "float32":
call.Args.Processed = append(call.Args.Processed, fmt.Sprintf("%g", math.Float32frombits(uint32(pop()))))
case "float64":
call.Args.Processed = append(call.Args.Processed, fmt.Sprintf("%g", math.Float64frombits(pop())))
case "int", "int8", "int16", "int32", "int64", "uint", "uint8", "uint16", "uint32", "uint64":
call.Args.Processed = append(call.Args.Processed, fmt.Sprintf("%d", pop()))
case "string":
call.Args.Processed = append(call.Args.Processed, fmt.Sprintf("%s(%s, len=%d)", t, popName(), pop()))
default:
if strings.HasPrefix(t, "*") {
call.Args.Processed = append(call.Args.Processed, fmt.Sprintf("%s(%s)", t, popName()))
} else if strings.HasPrefix(t, "[]") {
call.Args.Processed = append(call.Args.Processed, fmt.Sprintf("%s(%s len=%d cap=%d)", t, popName(), pop(), pop()))
} else {
// Assumes it's an interface. For now, discard the object value, which
// is probably not a good idea.
call.Args.Processed = append(call.Args.Processed, fmt.Sprintf("%s(%s)", t, popName()))
pop()
}
}
if len(values) == 0 && call.Args.Elided {
return
}
}
}

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vendor/github.com/maruel/panicparse/stack/stack.go generated vendored
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@ -1,832 +0,0 @@
// Copyright 2015 Marc-Antoine Ruel. All rights reserved.
// Use of this source code is governed under the Apache License, Version 2.0
// that can be found in the LICENSE file.
// Package stack analyzes stack dump of Go processes and simplifies it.
//
// It is mostly useful on servers will large number of identical goroutines,
// making the crash dump harder to read than strictly necesary.
package stack
import (
"bufio"
"bytes"
"errors"
"fmt"
"io"
"math"
"net/url"
"os"
"path/filepath"
"regexp"
"runtime"
"sort"
"strconv"
"strings"
"unicode"
"unicode/utf8"
)
const lockedToThread = "locked to thread"
var (
// TODO(maruel): Handle corrupted stack cases:
// - missed stack barrier
// - found next stack barrier at 0x123; expected
// - runtime: unexpected return pc for FUNC_NAME called from 0x123
reRoutineHeader = regexp.MustCompile("^goroutine (\\d+) \\[([^\\]]+)\\]\\:\n$")
reMinutes = regexp.MustCompile("^(\\d+) minutes$")
reUnavail = regexp.MustCompile("^(?:\t| +)goroutine running on other thread; stack unavailable")
// See gentraceback() in src/runtime/traceback.go for more information.
// - Sometimes the source file comes up as "<autogenerated>". It is the
// compiler than generated these, not the runtime.
// - The tab may be replaced with spaces when a user copy-paste it, handle
// this transparently.
// - "runtime.gopanic" is explicitly replaced with "panic" by gentraceback().
// - The +0x123 byte offset is printed when frame.pc > _func.entry. _func is
// generated by the linker.
// - The +0x123 byte offset is not included with generated code, e.g. unnamed
// functions "func·006()" which is generally go func() { ... }()
// statements. Since the _func is generated at runtime, it's probably why
// _func.entry is not set.
// - C calls may have fp=0x123 sp=0x123 appended. I think it normally happens
// when a signal is not correctly handled. It is printed with m.throwing>0.
// These are discarded.
// - For cgo, the source file may be "??".
reFile = regexp.MustCompile("^(?:\t| +)(\\?\\?|\\<autogenerated\\>|.+\\.(?:c|go|s))\\:(\\d+)(?:| \\+0x[0-9a-f]+)(?:| fp=0x[0-9a-f]+ sp=0x[0-9a-f]+)\n$")
// Sadly, it doesn't note the goroutine number so we could cascade them per
// parenthood.
reCreated = regexp.MustCompile("^created by (.+)\n$")
reFunc = regexp.MustCompile("^(.+)\\((.*)\\)\n$")
reElided = regexp.MustCompile("^\\.\\.\\.additional frames elided\\.\\.\\.\n$")
// Include frequent GOROOT value on Windows, distro provided and user
// installed path. This simplifies the user's life when processing a trace
// generated on another VM.
// TODO(maruel): Guess the path automatically via traces containing the
// 'runtime' package, which is very frequent. This would be "less bad" than
// throwing up random values at the parser.
goroots = []string{runtime.GOROOT(), "c:/go", "/usr/lib/go", "/usr/local/go"}
)
// Similarity is the level at which two call lines arguments must match to be
// considered similar enough to coalesce them.
type Similarity int
const (
// ExactFlags requires same bits (e.g. Locked).
ExactFlags Similarity = iota
// ExactLines requests the exact same arguments on the call line.
ExactLines
// AnyPointer considers different pointers a similar call line.
AnyPointer
// AnyValue accepts any value as similar call line.
AnyValue
)
// Function is a function call.
//
// Go stack traces print a mangled function call, this wrapper unmangle the
// string before printing and adds other filtering methods.
type Function struct {
Raw string
}
// String is the fully qualified function name.
//
// Sadly Go is a bit confused when the package name doesn't match the directory
// containing the source file and will use the directory name instead of the
// real package name.
func (f Function) String() string {
s, _ := url.QueryUnescape(f.Raw)
return s
}
// Name is the naked function name.
func (f Function) Name() string {
parts := strings.SplitN(filepath.Base(f.Raw), ".", 2)
if len(parts) == 1 {
return parts[0]
}
return parts[1]
}
// PkgName is the package name for this function reference.
func (f Function) PkgName() string {
parts := strings.SplitN(filepath.Base(f.Raw), ".", 2)
if len(parts) == 1 {
return ""
}
s, _ := url.QueryUnescape(parts[0])
return s
}
// PkgDotName returns "<package>.<func>" format.
func (f Function) PkgDotName() string {
parts := strings.SplitN(filepath.Base(f.Raw), ".", 2)
s, _ := url.QueryUnescape(parts[0])
if len(parts) == 1 {
return parts[0]
}
if s != "" || parts[1] != "" {
return s + "." + parts[1]
}
return ""
}
// IsExported returns true if the function is exported.
func (f Function) IsExported() bool {
name := f.Name()
parts := strings.Split(name, ".")
r, _ := utf8.DecodeRuneInString(parts[len(parts)-1])
if unicode.ToUpper(r) == r {
return true
}
return f.PkgName() == "main" && name == "main"
}
// Arg is an argument on a Call.
type Arg struct {
Value uint64 // Value is the raw value as found in the stack trace
Name string // Name is a pseudo name given to the argument
}
// IsPtr returns true if we guess it's a pointer. It's only a guess, it can be
// easily be confused by a bitmask.
func (a *Arg) IsPtr() bool {
// Assumes all pointers are above 16Mb and positive.
return a.Value > 16*1024*1024 && a.Value < math.MaxInt64
}
func (a Arg) String() string {
if a.Name != "" {
return a.Name
}
if a.Value == 0 {
return "0"
}
return fmt.Sprintf("0x%x", a.Value)
}
// Args is a series of function call arguments.
type Args struct {
Values []Arg // Values is the arguments as shown on the stack trace. They are mangled via simplification.
Processed []string // Processed is the arguments generated from processing the source files. It can have a length lower than Values.
Elided bool // If set, it means there was a trailing ", ..."
}
func (a Args) String() string {
var v []string
if len(a.Processed) != 0 {
v = make([]string, 0, len(a.Processed))
for _, item := range a.Processed {
v = append(v, item)
}
} else {
v = make([]string, 0, len(a.Values))
for _, item := range a.Values {
v = append(v, item.String())
}
}
if a.Elided {
v = append(v, "...")
}
return strings.Join(v, ", ")
}
// Equal returns true only if both arguments are exactly equal.
func (a *Args) Equal(r *Args) bool {
if a.Elided != r.Elided || len(a.Values) != len(r.Values) {
return false
}
for i, l := range a.Values {
if l != r.Values[i] {
return false
}
}
return true
}
// Similar returns true if the two Args are equal or almost but not quite
// equal.
func (a *Args) Similar(r *Args, similar Similarity) bool {
if a.Elided != r.Elided || len(a.Values) != len(r.Values) {
return false
}
if similar == AnyValue {
return true
}
for i, l := range a.Values {
switch similar {
case ExactFlags, ExactLines:
if l != r.Values[i] {
return false
}
default:
if l.IsPtr() != r.Values[i].IsPtr() || (!l.IsPtr() && l != r.Values[i]) {
return false
}
}
}
return true
}
// Merge merges two similar Args, zapping out differences.
func (a *Args) Merge(r *Args) Args {
out := Args{
Values: make([]Arg, len(a.Values)),
Elided: a.Elided,
}
for i, l := range a.Values {
if l != r.Values[i] {
out.Values[i].Name = "*"
out.Values[i].Value = l.Value
} else {
out.Values[i] = l
}
}
return out
}
// Call is an item in the stack trace.
type Call struct {
SourcePath string // Full path name of the source file
Line int // Line number
Func Function // Fully qualified function name (encoded).
Args Args // Call arguments
}
// Equal returns true only if both calls are exactly equal.
func (c *Call) Equal(r *Call) bool {
return c.SourcePath == r.SourcePath && c.Line == r.Line && c.Func == r.Func && c.Args.Equal(&r.Args)
}
// Similar returns true if the two Call are equal or almost but not quite
// equal.
func (c *Call) Similar(r *Call, similar Similarity) bool {
return c.SourcePath == r.SourcePath && c.Line == r.Line && c.Func == r.Func && c.Args.Similar(&r.Args, similar)
}
// Merge merges two similar Call, zapping out differences.
func (c *Call) Merge(r *Call) Call {
return Call{
SourcePath: c.SourcePath,
Line: c.Line,
Func: c.Func,
Args: c.Args.Merge(&r.Args),
}
}
// SourceName returns the base file name of the source file.
func (c *Call) SourceName() string {
return filepath.Base(c.SourcePath)
}
// SourceLine returns "source.go:line", including only the base file name.
func (c *Call) SourceLine() string {
return fmt.Sprintf("%s:%d", c.SourceName(), c.Line)
}
// FullSourceLine returns "/path/to/source.go:line".
func (c *Call) FullSourceLine() string {
return fmt.Sprintf("%s:%d", c.SourcePath, c.Line)
}
// PkgSource is one directory plus the file name of the source file.
func (c *Call) PkgSource() string {
return filepath.Join(filepath.Base(filepath.Dir(c.SourcePath)), c.SourceName())
}
const testMainSource = "_test" + string(os.PathSeparator) + "_testmain.go"
// IsStdlib returns true if it is a Go standard library function. This includes
// the 'go test' generated main executable.
func (c *Call) IsStdlib() bool {
for _, goroot := range goroots {
if strings.HasPrefix(c.SourcePath, goroot) {
return true
}
}
// Consider _test/_testmain.go as stdlib since it's injected by "go test".
return c.PkgSource() == testMainSource
}
// IsPkgMain returns true if it is in the main package.
func (c *Call) IsPkgMain() bool {
return c.Func.PkgName() == "main"
}
// Stack is a call stack.
type Stack struct {
Calls []Call // Call stack. First is original function, last is leaf function.
Elided bool // Happens when there's >100 items in Stack, currently hardcoded in package runtime.
}
// Equal returns true on if both call stacks are exactly equal.
func (s *Stack) Equal(r *Stack) bool {
if len(s.Calls) != len(r.Calls) || s.Elided != r.Elided {
return false
}
for i := range s.Calls {
if !s.Calls[i].Equal(&r.Calls[i]) {
return false
}
}
return true
}
// Similar returns true if the two Stack are equal or almost but not quite
// equal.
func (s *Stack) Similar(r *Stack, similar Similarity) bool {
if len(s.Calls) != len(r.Calls) || s.Elided != r.Elided {
return false
}
for i := range s.Calls {
if !s.Calls[i].Similar(&r.Calls[i], similar) {
return false
}
}
return true
}
// Merge merges two similar Stack, zapping out differences.
func (s *Stack) Merge(r *Stack) *Stack {
// Assumes similar stacks have the same length.
out := &Stack{
Calls: make([]Call, len(s.Calls)),
Elided: s.Elided,
}
for i := range s.Calls {
out.Calls[i] = s.Calls[i].Merge(&r.Calls[i])
}
return out
}
// Less compares two Stack, where the ones that are less are more
// important, so they come up front. A Stack with more private functions is
// 'less' so it is at the top. Inversely, a Stack with only public
// functions is 'more' so it is at the bottom.
func (s *Stack) Less(r *Stack) bool {
lStdlib := 0
lPrivate := 0
for _, c := range s.Calls {
if c.IsStdlib() {
lStdlib++
} else {
lPrivate++
}
}
rStdlib := 0
rPrivate := 0
for _, s := range r.Calls {
if s.IsStdlib() {
rStdlib++
} else {
rPrivate++
}
}
if lPrivate > rPrivate {
return true
}
if lPrivate < rPrivate {
return false
}
if lStdlib > rStdlib {
return false
}
if lStdlib < rStdlib {
return true
}
// Stack lengths are the same.
for x := range s.Calls {
if s.Calls[x].Func.Raw < r.Calls[x].Func.Raw {
return true
}
if s.Calls[x].Func.Raw > r.Calls[x].Func.Raw {
return true
}
if s.Calls[x].PkgSource() < r.Calls[x].PkgSource() {
return true
}
if s.Calls[x].PkgSource() > r.Calls[x].PkgSource() {
return true
}
if s.Calls[x].Line < r.Calls[x].Line {
return true
}
if s.Calls[x].Line > r.Calls[x].Line {
return true
}
}
return false
}
// Signature represents the signature of one or multiple goroutines.
//
// It is effectively the stack trace plus the goroutine internal bits, like
// it's state, if it is thread locked, which call site created this goroutine,
// etc.
type Signature struct {
// Use git grep 'gopark(|unlock)\(' to find them all plus everything listed
// in runtime/traceback.go. Valid values includes:
// - chan send, chan receive, select
// - finalizer wait, mark wait (idle),
// - Concurrent GC wait, GC sweep wait, force gc (idle)
// - IO wait, panicwait
// - semacquire, semarelease
// - sleep, timer goroutine (idle)
// - trace reader (blocked)
// Stuck cases:
// - chan send (nil chan), chan receive (nil chan), select (no cases)
// Runnable states:
// - idle, runnable, running, syscall, waiting, dead, enqueue, copystack,
// Scan states:
// - scan, scanrunnable, scanrunning, scansyscall, scanwaiting, scandead,
// scanenqueue
State string
CreatedBy Call // Which other goroutine which created this one.
SleepMin int // Wait time in minutes, if applicable.
SleepMax int // Wait time in minutes, if applicable.
Stack Stack
Locked bool // Locked to an OS thread.
}
// Equal returns true only if both signatures are exactly equal.
func (s *Signature) Equal(r *Signature) bool {
if s.State != r.State || !s.CreatedBy.Equal(&r.CreatedBy) || s.Locked != r.Locked || s.SleepMin != r.SleepMin || s.SleepMax != r.SleepMax {
return false
}
return s.Stack.Equal(&r.Stack)
}
// Similar returns true if the two Signature are equal or almost but not quite
// equal.
func (s *Signature) Similar(r *Signature, similar Similarity) bool {
if s.State != r.State || !s.CreatedBy.Similar(&r.CreatedBy, similar) {
return false
}
if similar == ExactFlags && s.Locked != r.Locked {
return false
}
return s.Stack.Similar(&r.Stack, similar)
}
// Merge merges two similar Signature, zapping out differences.
func (s *Signature) Merge(r *Signature) *Signature {
min := s.SleepMin
if r.SleepMin < min {
min = r.SleepMin
}
max := s.SleepMax
if r.SleepMax > max {
max = r.SleepMax
}
return &Signature{
State: s.State, // Drop right side.
CreatedBy: s.CreatedBy, // Drop right side.
SleepMin: min,
SleepMax: max,
Stack: *s.Stack.Merge(&r.Stack),
Locked: s.Locked || r.Locked, // TODO(maruel): This is weirdo.
}
}
// Less compares two Signature, where the ones that are less are more
// important, so they come up front. A Signature with more private functions is
// 'less' so it is at the top. Inversely, a Signature with only public
// functions is 'more' so it is at the bottom.
func (s *Signature) Less(r *Signature) bool {
if s.Stack.Less(&r.Stack) {
return true
}
if r.Stack.Less(&s.Stack) {
return false
}
if s.Locked && !r.Locked {
return true
}
if r.Locked && !s.Locked {
return false
}
if s.State < r.State {
return true
}
if s.State > r.State {
return false
}
return false
}
// Goroutine represents the state of one goroutine, including the stack trace.
type Goroutine struct {
Signature // It's stack trace, internal bits, state, which call site created it, etc.
ID int // Goroutine ID.
First bool // First is the goroutine first printed, normally the one that crashed.
}
// Bucketize returns the number of similar goroutines.
func Bucketize(goroutines []Goroutine, similar Similarity) map[*Signature][]Goroutine {
out := map[*Signature][]Goroutine{}
// O(n²). Fix eventually.
for _, routine := range goroutines {
found := false
for key := range out {
// When a match is found, this effectively drops the other goroutine ID.
if key.Similar(&routine.Signature, similar) {
found = true
if !key.Equal(&routine.Signature) {
// Almost but not quite equal. There's different pointers passed
// around but the same values. Zap out the different values.
newKey := key.Merge(&routine.Signature)
out[newKey] = append(out[key], routine)
delete(out, key)
} else {
out[key] = append(out[key], routine)
}
break
}
}
if !found {
key := &Signature{}
*key = routine.Signature
out[key] = []Goroutine{routine}
}
}
return out
}
// Bucket is a stack trace signature and the list of goroutines that fits this
// signature.
type Bucket struct {
Signature
Routines []Goroutine
}
// First returns true if it contains the first goroutine, e.g. the ones that
// likely generated the panic() call, if any.
func (b *Bucket) First() bool {
for _, r := range b.Routines {
if r.First {
return true
}
}
return false
}
// Less does reverse sort.
func (b *Bucket) Less(r *Bucket) bool {
if b.First() {
return true
}
if r.First() {
return false
}
return b.Signature.Less(&r.Signature)
}
// Buckets is a list of Bucket sorted by repeation count.
type Buckets []Bucket
func (b Buckets) Len() int {
return len(b)
}
func (b Buckets) Less(i, j int) bool {
return b[i].Less(&b[j])
}
func (b Buckets) Swap(i, j int) {
b[j], b[i] = b[i], b[j]
}
// SortBuckets creates a list of Bucket from each goroutine stack trace count.
func SortBuckets(buckets map[*Signature][]Goroutine) Buckets {
out := make(Buckets, 0, len(buckets))
for signature, count := range buckets {
out = append(out, Bucket{*signature, count})
}
sort.Sort(out)
return out
}
// scanLines is similar to bufio.ScanLines except that it:
// - doesn't drop '\n'
// - doesn't strip '\r'
// - returns when the data is bufio.MaxScanTokenSize bytes
func scanLines(data []byte, atEOF bool) (advance int, token []byte, err error) {
if atEOF && len(data) == 0 {
return 0, nil, nil
}
if i := bytes.IndexByte(data, '\n'); i >= 0 {
return i + 1, data[0 : i+1], nil
}
if atEOF {
return len(data), data, nil
}
if len(data) >= bufio.MaxScanTokenSize {
// Returns the line even if it is not at EOF nor has a '\n', otherwise the
// scanner will return bufio.ErrTooLong which is definitely not what we
// want.
return len(data), data, nil
}
return 0, nil, nil
}
// ParseDump processes the output from runtime.Stack().
//
// It supports piping from another command and assumes there is junk before the
// actual stack trace. The junk is streamed to out.
func ParseDump(r io.Reader, out io.Writer) ([]Goroutine, error) {
goroutines := make([]Goroutine, 0, 16)
var goroutine *Goroutine
scanner := bufio.NewScanner(r)
scanner.Split(scanLines)
// TODO(maruel): Use a formal state machine. Patterns follows:
// - reRoutineHeader
// Either:
// - reUnavail
// - reFunc + reFile in a loop
// - reElided
// Optionally ends with:
// - reCreated + reFile
// Between each goroutine stack dump: an empty line
created := false
// firstLine is the first line after the reRoutineHeader header line.
firstLine := false
for scanner.Scan() {
line := scanner.Text()
if line == "\n" {
if goroutine != nil {
goroutine = nil
continue
}
} else if line[len(line)-1] == '\n' {
if goroutine == nil {
if match := reRoutineHeader.FindStringSubmatch(line); match != nil {
if id, err := strconv.Atoi(match[1]); err == nil {
// See runtime/traceback.go.
// "<state>, \d+ minutes, locked to thread"
items := strings.Split(match[2], ", ")
sleep := 0
locked := false
for i := 1; i < len(items); i++ {
if items[i] == lockedToThread {
locked = true
continue
}
// Look for duration, if any.
if match2 := reMinutes.FindStringSubmatch(items[i]); match2 != nil {
sleep, _ = strconv.Atoi(match2[1])
}
}
goroutines = append(goroutines, Goroutine{
Signature: Signature{
State: items[0],
SleepMin: sleep,
SleepMax: sleep,
Locked: locked,
},
ID: id,
First: len(goroutines) == 0,
})
goroutine = &goroutines[len(goroutines)-1]
firstLine = true
continue
}
}
} else {
if firstLine {
firstLine = false
if match := reUnavail.FindStringSubmatch(line); match != nil {
// Generate a fake stack entry.
goroutine.Stack.Calls = []Call{{SourcePath: "<unavailable>"}}
continue
}
}
if match := reFile.FindStringSubmatch(line); match != nil {
// Triggers after a reFunc or a reCreated.
num, err := strconv.Atoi(match[2])
if err != nil {
return goroutines, fmt.Errorf("failed to parse int on line: \"%s\"", line)
}
if created {
created = false
goroutine.CreatedBy.SourcePath = match[1]
goroutine.CreatedBy.Line = num
} else {
i := len(goroutine.Stack.Calls) - 1
if i < 0 {
return goroutines, errors.New("unexpected order")
}
goroutine.Stack.Calls[i].SourcePath = match[1]
goroutine.Stack.Calls[i].Line = num
}
continue
}
if match := reCreated.FindStringSubmatch(line); match != nil {
created = true
goroutine.CreatedBy.Func.Raw = match[1]
continue
}
if match := reFunc.FindStringSubmatch(line); match != nil {
args := Args{}
for _, a := range strings.Split(match[2], ", ") {
if a == "..." {
args.Elided = true
continue
}
if a == "" {
// Remaining values were dropped.
break
}
v, err := strconv.ParseUint(a, 0, 64)
if err != nil {
return goroutines, fmt.Errorf("failed to parse int on line: \"%s\"", line)
}
args.Values = append(args.Values, Arg{Value: v})
}
goroutine.Stack.Calls = append(goroutine.Stack.Calls, Call{Func: Function{match[1]}, Args: args})
continue
}
if match := reElided.FindStringSubmatch(line); match != nil {
goroutine.Stack.Elided = true
continue
}
}
}
_, _ = io.WriteString(out, line)
goroutine = nil
}
nameArguments(goroutines)
return goroutines, scanner.Err()
}
// Private stuff.
func nameArguments(goroutines []Goroutine) {
// Set a name for any pointer occuring more than once.
type object struct {
args []*Arg
inPrimary bool
id int
}
objects := map[uint64]object{}
// Enumerate all the arguments.
for i := range goroutines {
for j := range goroutines[i].Stack.Calls {
for k := range goroutines[i].Stack.Calls[j].Args.Values {
arg := goroutines[i].Stack.Calls[j].Args.Values[k]
if arg.IsPtr() {
objects[arg.Value] = object{
args: append(objects[arg.Value].args, &goroutines[i].Stack.Calls[j].Args.Values[k]),
inPrimary: objects[arg.Value].inPrimary || i == 0,
}
}
}
}
// CreatedBy.Args is never set.
}
order := uint64Slice{}
for k, obj := range objects {
if len(obj.args) > 1 && obj.inPrimary {
order = append(order, k)
}
}
sort.Sort(order)
nextID := 1
for _, k := range order {
for _, arg := range objects[k].args {
arg.Name = fmt.Sprintf("#%d", nextID)
}
nextID++
}
// Now do the rest. This is done so the output is deterministic.
order = uint64Slice{}
for k := range objects {
order = append(order, k)
}
sort.Sort(order)
for _, k := range order {
// Process the remaining pointers, they were not referenced by primary
// thread so will have higher IDs.
if objects[k].inPrimary {
continue
}
for _, arg := range objects[k].args {
arg.Name = fmt.Sprintf("#%d", nextID)
}
nextID++
}
}
type uint64Slice []uint64
func (a uint64Slice) Len() int { return len(a) }
func (a uint64Slice) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a uint64Slice) Less(i, j int) bool { return a[i] < a[j] }

139
vendor/github.com/maruel/panicparse/stack/ui.go generated vendored
View File

@ -1,139 +0,0 @@
// Copyright 2016 Marc-Antoine Ruel. All rights reserved.
// Use of this source code is governed under the Apache License, Version 2.0
// that can be found in the LICENSE file.
package stack
import (
"fmt"
"strings"
)
// Palette defines the color used.
//
// An empty object Palette{} can be used to disable coloring.
type Palette struct {
EOLReset string
// Routine header.
RoutineFirst string // The first routine printed.
Routine string // Following routines.
CreatedBy string
// Call line.
Package string
SourceFile string
FunctionStdLib string
FunctionStdLibExported string
FunctionMain string
FunctionOther string
FunctionOtherExported string
Arguments string
}
// CalcLengths returns the maximum length of the source lines and package names.
func CalcLengths(buckets Buckets, fullPath bool) (int, int) {
srcLen := 0
pkgLen := 0
for _, bucket := range buckets {
for _, line := range bucket.Signature.Stack.Calls {
l := 0
if fullPath {
l = len(line.FullSourceLine())
} else {
l = len(line.SourceLine())
}
if l > srcLen {
srcLen = l
}
l = len(line.Func.PkgName())
if l > pkgLen {
pkgLen = l
}
}
}
return srcLen, pkgLen
}
// functionColor returns the color to be used for the function name based on
// the type of package the function is in.
func (p *Palette) functionColor(line *Call) string {
if line.IsStdlib() {
if line.Func.IsExported() {
return p.FunctionStdLibExported
}
return p.FunctionStdLib
} else if line.IsPkgMain() {
return p.FunctionMain
} else if line.Func.IsExported() {
return p.FunctionOtherExported
}
return p.FunctionOther
}
// routineColor returns the color for the header of the goroutines bucket.
func (p *Palette) routineColor(bucket *Bucket, multipleBuckets bool) string {
if bucket.First() && multipleBuckets {
return p.RoutineFirst
}
return p.Routine
}
// BucketHeader prints the header of a goroutine signature.
func (p *Palette) BucketHeader(bucket *Bucket, fullPath, multipleBuckets bool) string {
extra := ""
if bucket.SleepMax != 0 {
if bucket.SleepMin != bucket.SleepMax {
extra += fmt.Sprintf(" [%d~%d minutes]", bucket.SleepMin, bucket.SleepMax)
} else {
extra += fmt.Sprintf(" [%d minutes]", bucket.SleepMax)
}
}
if bucket.Locked {
extra += " [locked]"
}
created := bucket.CreatedBy.Func.PkgDotName()
if created != "" {
created += " @ "
if fullPath {
created += bucket.CreatedBy.FullSourceLine()
} else {
created += bucket.CreatedBy.SourceLine()
}
extra += p.CreatedBy + " [Created by " + created + "]"
}
return fmt.Sprintf(
"%s%d: %s%s%s\n",
p.routineColor(bucket, multipleBuckets), len(bucket.Routines),
bucket.State, extra,
p.EOLReset)
}
// callLine prints one stack line.
func (p *Palette) callLine(line *Call, srcLen, pkgLen int, fullPath bool) string {
src := ""
if fullPath {
src = line.FullSourceLine()
} else {
src = line.SourceLine()
}
return fmt.Sprintf(
" %s%-*s %s%-*s %s%s%s(%s)%s",
p.Package, pkgLen, line.Func.PkgName(),
p.SourceFile, srcLen, src,
p.functionColor(line), line.Func.Name(),
p.Arguments, line.Args,
p.EOLReset)
}
// StackLines prints one complete stack trace, without the header.
func (p *Palette) StackLines(signature *Signature, srcLen, pkgLen int, fullPath bool) string {
out := make([]string, len(signature.Stack.Calls))
for i := range signature.Stack.Calls {
out[i] = p.callLine(&signature.Stack.Calls[i], srcLen, pkgLen, fullPath)
}
if signature.Stack.Elided {
out = append(out, " (...)")
}
return strings.Join(out, "\n") + "\n"
}

17
vendor/github.com/maruel/panicparse/vendor.yml generated vendored
View File

@ -1,17 +0,0 @@
vendors:
- path: github.com/kr/pretty
rev: 737b74a46c4bf788349f72cb256fed10aea4d0ac
- path: github.com/kr/text
rev: 7cafcd837844e784b526369c9bce262804aebc60
- path: github.com/maruel/ut
rev: a9c9f15ccfa6f8b90182a53df32f4745586fbae3
- path: github.com/mattn/go-colorable
rev: 9056b7a9f2d1f2d96498d6d146acd1f9d5ed3d59
- path: github.com/mattn/go-isatty
rev: 56b76bdf51f7708750eac80fa38b952bb9f32639
- path: github.com/mgutz/ansi
rev: c286dcecd19ff979eeb73ea444e479b903f2cfcb
- path: github.com/pmezard/go-difflib
rev: 792786c7400a136282c1664665ae0a8db921c6c2
- path: golang.org/x/sys
rev: a646d33e2ee3172a661fc09bca23bb4889a41bc8

21
vendor/github.com/mitchellh/go-wordwrap/LICENSE.md generated vendored
View File

@ -1,21 +0,0 @@
The MIT License (MIT)
Copyright (c) 2014 Mitchell Hashimoto
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

39
vendor/github.com/mitchellh/go-wordwrap/README.md generated vendored
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@ -1,39 +0,0 @@
# go-wordwrap
`go-wordwrap` (Golang package: `wordwrap`) is a package for Go that
automatically wraps words into multiple lines. The primary use case for this
is in formatting CLI output, but of course word wrapping is a generally useful
thing to do.
## Installation and Usage
Install using `go get github.com/mitchellh/go-wordwrap`.
Full documentation is available at
http://godoc.org/github.com/mitchellh/go-wordwrap
Below is an example of its usage ignoring errors:
```go
wrapped := wordwrap.WrapString("foo bar baz", 3)
fmt.Println(wrapped)
```
Would output:
```
foo
bar
baz
```
## Word Wrap Algorithm
This library doesn't use any clever algorithm for word wrapping. The wrapping
is actually very naive: whenever there is whitespace or an explicit linebreak.
The goal of this library is for word wrapping CLI output, so the input is
typically pretty well controlled human language. Because of this, the naive
approach typically works just fine.
In the future, we'd like to make the algorithm more advanced. We would do
so without breaking the API.

73
vendor/github.com/mitchellh/go-wordwrap/wordwrap.go generated vendored
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@ -1,73 +0,0 @@
package wordwrap
import (
"bytes"
"unicode"
)
// WrapString wraps the given string within lim width in characters.
//
// Wrapping is currently naive and only happens at white-space. A future
// version of the library will implement smarter wrapping. This means that
// pathological cases can dramatically reach past the limit, such as a very
// long word.
func WrapString(s string, lim uint) string {
// Initialize a buffer with a slightly larger size to account for breaks
init := make([]byte, 0, len(s))
buf := bytes.NewBuffer(init)
var current uint
var wordBuf, spaceBuf bytes.Buffer
for _, char := range s {
if char == '\n' {
if wordBuf.Len() == 0 {
if current+uint(spaceBuf.Len()) > lim {
current = 0
} else {
current += uint(spaceBuf.Len())
spaceBuf.WriteTo(buf)
}
spaceBuf.Reset()
} else {
current += uint(spaceBuf.Len() + wordBuf.Len())
spaceBuf.WriteTo(buf)
spaceBuf.Reset()
wordBuf.WriteTo(buf)
wordBuf.Reset()
}
buf.WriteRune(char)
current = 0
} else if unicode.IsSpace(char) {
if spaceBuf.Len() == 0 || wordBuf.Len() > 0 {
current += uint(spaceBuf.Len() + wordBuf.Len())
spaceBuf.WriteTo(buf)
spaceBuf.Reset()
wordBuf.WriteTo(buf)
wordBuf.Reset()
}
spaceBuf.WriteRune(char)
} else {
wordBuf.WriteRune(char)
if current+uint(spaceBuf.Len()+wordBuf.Len()) > lim && uint(wordBuf.Len()) < lim {
buf.WriteRune('\n')
current = 0
spaceBuf.Reset()
}
}
}
if wordBuf.Len() == 0 {
if current+uint(spaceBuf.Len()) <= lim {
spaceBuf.WriteTo(buf)
}
} else {
spaceBuf.WriteTo(buf)
wordBuf.WriteTo(buf)
}
return buf.String()
}

4
vendor/github.com/nsf/termbox-go/AUTHORS generated vendored
View File

@ -1,4 +0,0 @@
# Please keep this file sorted.
Georg Reinke <guelfey@googlemail.com>
nsf <no.smile.face@gmail.com>

19
vendor/github.com/nsf/termbox-go/LICENSE generated vendored
View File

@ -1,19 +0,0 @@
Copyright (C) 2012 termbox-go authors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

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## Termbox
Termbox is a library that provides a minimalistic API which allows the programmer to write text-based user interfaces. The library is crossplatform and has both terminal-based implementations on *nix operating systems and a winapi console based implementation for windows operating systems. The basic idea is an abstraction of the greatest common subset of features available on all major terminals and other terminal-like APIs in a minimalistic fashion. Small API means it is easy to implement, test, maintain and learn it, that's what makes the termbox a distinct library in its area.
### Installation
Install and update this go package with `go get -u github.com/nsf/termbox-go`
### Examples
For examples of what can be done take a look at demos in the _demos directory. You can try them with go run: `go run _demos/keyboard.go`
There are also some interesting projects using termbox-go:
- [godit](https://github.com/nsf/godit) is an emacsish lightweight text editor written using termbox.
- [gomatrix](https://github.com/GeertJohan/gomatrix) connects to The Matrix and displays its data streams in your terminal.
- [gotetris](https://github.com/jjinux/gotetris) is an implementation of Tetris.
- [sokoban-go](https://github.com/rn2dy/sokoban-go) is an implementation of sokoban game.
- [hecate](https://github.com/evanmiller/hecate) is a hex editor designed by Satan.
- [httopd](https://github.com/verdverm/httopd) is top for httpd logs.
- [mop](https://github.com/michaeldv/mop) is stock market tracker for hackers.
- [termui](https://github.com/gizak/termui) is a terminal dashboard.
- [termloop](https://github.com/JoelOtter/termloop) is a terminal game engine.
- [xterm-color-chart](https://github.com/kutuluk/xterm-color-chart) is a XTerm 256 color chart.
- [gocui](https://github.com/jroimartin/gocui) is a minimalist Go library aimed at creating console user interfaces.
- [dry](https://github.com/moncho/dry) is an interactive cli to manage Docker containers.
- [pxl](https://github.com/ichinaski/pxl) displays images in the terminal.
- [snake-game](https://github.com/DyegoCosta/snake-game) is an implementation of the Snake game.
- [gone](https://github.com/guillaumebreton/gone) is a CLI pomodoro® timer.
- [Spoof.go](https://github.com/sabey/spoofgo) controllable movement spoofing from the cli
- [lf](https://github.com/gokcehan/lf) is a terminal file manager
- [rat](https://github.com/ericfreese/rat) lets you compose shell commands to build terminal applications.
### API reference
[godoc.org/github.com/nsf/termbox-go](http://godoc.org/github.com/nsf/termbox-go)

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// +build !windows
package termbox
import "github.com/mattn/go-runewidth"
import "fmt"
import "os"
import "os/signal"
import "syscall"
import "runtime"
// public API
// Initializes termbox library. This function should be called before any other functions.
// After successful initialization, the library must be finalized using 'Close' function.
//
// Example usage:
// err := termbox.Init()
// if err != nil {
// panic(err)
// }
// defer termbox.Close()
func Init() error {
var err error
out, err = os.OpenFile("/dev/tty", syscall.O_WRONLY, 0)
if err != nil {
return err
}
in, err = syscall.Open("/dev/tty", syscall.O_RDONLY, 0)
if err != nil {
return err
}
err = setup_term()
if err != nil {
return fmt.Errorf("termbox: error while reading terminfo data: %v", err)
}
signal.Notify(sigwinch, syscall.SIGWINCH)
signal.Notify(sigio, syscall.SIGIO)
_, err = fcntl(in, syscall.F_SETFL, syscall.O_ASYNC|syscall.O_NONBLOCK)
if err != nil {
return err
}
_, err = fcntl(in, syscall.F_SETOWN, syscall.Getpid())
if runtime.GOOS != "darwin" && err != nil {
return err
}
err = tcgetattr(out.Fd(), &orig_tios)
if err != nil {
return err
}
tios := orig_tios
tios.Iflag &^= syscall_IGNBRK | syscall_BRKINT | syscall_PARMRK |
syscall_ISTRIP | syscall_INLCR | syscall_IGNCR |
syscall_ICRNL | syscall_IXON
tios.Lflag &^= syscall_ECHO | syscall_ECHONL | syscall_ICANON |
syscall_ISIG | syscall_IEXTEN
tios.Cflag &^= syscall_CSIZE | syscall_PARENB
tios.Cflag |= syscall_CS8
tios.Cc[syscall_VMIN] = 1
tios.Cc[syscall_VTIME] = 0
err = tcsetattr(out.Fd(), &tios)
if err != nil {
return err
}
out.WriteString(funcs[t_enter_ca])
out.WriteString(funcs[t_enter_keypad])
out.WriteString(funcs[t_hide_cursor])
out.WriteString(funcs[t_clear_screen])
termw, termh = get_term_size(out.Fd())
back_buffer.init(termw, termh)
front_buffer.init(termw, termh)
back_buffer.clear()
front_buffer.clear()
go func() {
buf := make([]byte, 128)
for {
select {
case <-sigio:
for {
n, err := syscall.Read(in, buf)
if err == syscall.EAGAIN || err == syscall.EWOULDBLOCK {
break
}
select {
case input_comm <- input_event{buf[:n], err}:
ie := <-input_comm
buf = ie.data[:128]
case <-quit:
return
}
}
case <-quit:
return
}
}
}()
IsInit = true
return nil
}
// Interrupt an in-progress call to PollEvent by causing it to return
// EventInterrupt. Note that this function will block until the PollEvent
// function has successfully been interrupted.
func Interrupt() {
interrupt_comm <- struct{}{}
}
// Finalizes termbox library, should be called after successful initialization
// when termbox's functionality isn't required anymore.
func Close() {
quit <- 1
out.WriteString(funcs[t_show_cursor])
out.WriteString(funcs[t_sgr0])
out.WriteString(funcs[t_clear_screen])
out.WriteString(funcs[t_exit_ca])
out.WriteString(funcs[t_exit_keypad])
out.WriteString(funcs[t_exit_mouse])
tcsetattr(out.Fd(), &orig_tios)
out.Close()
syscall.Close(in)
// reset the state, so that on next Init() it will work again
termw = 0
termh = 0
input_mode = InputEsc
out = nil
in = 0
lastfg = attr_invalid
lastbg = attr_invalid
lastx = coord_invalid
lasty = coord_invalid
cursor_x = cursor_hidden
cursor_y = cursor_hidden
foreground = ColorDefault
background = ColorDefault
IsInit = false
}
// Synchronizes the internal back buffer with the terminal.
func Flush() error {
// invalidate cursor position
lastx = coord_invalid
lasty = coord_invalid
update_size_maybe()
for y := 0; y < front_buffer.height; y++ {
line_offset := y * front_buffer.width
for x := 0; x < front_buffer.width; {
cell_offset := line_offset + x
back := &back_buffer.cells[cell_offset]
front := &front_buffer.cells[cell_offset]
if back.Ch < ' ' {
back.Ch = ' '
}
w := runewidth.RuneWidth(back.Ch)
if w == 0 || w == 2 && runewidth.IsAmbiguousWidth(back.Ch) {
w = 1
}
if *back == *front {
x += w
continue
}
*front = *back
send_attr(back.Fg, back.Bg)
if w == 2 && x == front_buffer.width-1 {
// there's not enough space for 2-cells rune,
// let's just put a space in there
send_char(x, y, ' ')
} else {
send_char(x, y, back.Ch)
if w == 2 {
next := cell_offset + 1
front_buffer.cells[next] = Cell{
Ch: 0,
Fg: back.Fg,
Bg: back.Bg,
}
}
}
x += w
}
}
if !is_cursor_hidden(cursor_x, cursor_y) {
write_cursor(cursor_x, cursor_y)
}
return flush()
}
// Sets the position of the cursor. See also HideCursor().
func SetCursor(x, y int) {
if is_cursor_hidden(cursor_x, cursor_y) && !is_cursor_hidden(x, y) {
outbuf.WriteString(funcs[t_show_cursor])
}
if !is_cursor_hidden(cursor_x, cursor_y) && is_cursor_hidden(x, y) {
outbuf.WriteString(funcs[t_hide_cursor])
}
cursor_x, cursor_y = x, y
if !is_cursor_hidden(cursor_x, cursor_y) {
write_cursor(cursor_x, cursor_y)
}
}
// The shortcut for SetCursor(-1, -1).
func HideCursor() {
SetCursor(cursor_hidden, cursor_hidden)
}
// Changes cell's parameters in the internal back buffer at the specified
// position.
func SetCell(x, y int, ch rune, fg, bg Attribute) {
if x < 0 || x >= back_buffer.width {
return
}
if y < 0 || y >= back_buffer.height {
return
}
back_buffer.cells[y*back_buffer.width+x] = Cell{ch, fg, bg}
}
// Returns a slice into the termbox's back buffer. You can get its dimensions
// using 'Size' function. The slice remains valid as long as no 'Clear' or
// 'Flush' function calls were made after call to this function.
func CellBuffer() []Cell {
return back_buffer.cells
}
// After getting a raw event from PollRawEvent function call, you can parse it
// again into an ordinary one using termbox logic. That is parse an event as
// termbox would do it. Returned event in addition to usual Event struct fields
// sets N field to the amount of bytes used within 'data' slice. If the length
// of 'data' slice is zero or event cannot be parsed for some other reason, the
// function will return a special event type: EventNone.
//
// IMPORTANT: EventNone may contain a non-zero N, which means you should skip
// these bytes, because termbox cannot recognize them.
//
// NOTE: This API is experimental and may change in future.
func ParseEvent(data []byte) Event {
event := Event{Type: EventKey}
ok := extract_event(data, &event)
if !ok {
return Event{Type: EventNone, N: event.N}
}
return event
}
// Wait for an event and return it. This is a blocking function call. Instead
// of EventKey and EventMouse it returns EventRaw events. Raw event is written
// into `data` slice and Event's N field is set to the amount of bytes written.
// The minimum required length of the 'data' slice is 1. This requirement may
// vary on different platforms.
//
// NOTE: This API is experimental and may change in future.
func PollRawEvent(data []byte) Event {
if len(data) == 0 {
panic("len(data) >= 1 is a requirement")
}
var event Event
if extract_raw_event(data, &event) {
return event
}
for {
select {
case ev := <-input_comm:
if ev.err != nil {
return Event{Type: EventError, Err: ev.err}
}
inbuf = append(inbuf, ev.data...)
input_comm <- ev
if extract_raw_event(data, &event) {
return event
}
case <-interrupt_comm:
event.Type = EventInterrupt
return event
case <-sigwinch:
event.Type = EventResize
event.Width, event.Height = get_term_size(out.Fd())
return event
}
}
}
// Wait for an event and return it. This is a blocking function call.
func PollEvent() Event {
var event Event
// try to extract event from input buffer, return on success
event.Type = EventKey
ok := extract_event(inbuf, &event)
if event.N != 0 {
copy(inbuf, inbuf[event.N:])
inbuf = inbuf[:len(inbuf)-event.N]
}
if ok {
return event
}
for {
select {
case ev := <-input_comm:
if ev.err != nil {
return Event{Type: EventError, Err: ev.err}
}
inbuf = append(inbuf, ev.data...)
input_comm <- ev
ok := extract_event(inbuf, &event)
if event.N != 0 {
copy(inbuf, inbuf[event.N:])
inbuf = inbuf[:len(inbuf)-event.N]
}
if ok {
return event
}
case <-interrupt_comm:
event.Type = EventInterrupt
return event
case <-sigwinch:
event.Type = EventResize
event.Width, event.Height = get_term_size(out.Fd())
return event
}
}
}
// Returns the size of the internal back buffer (which is mostly the same as
// terminal's window size in characters). But it doesn't always match the size
// of the terminal window, after the terminal size has changed, the internal
// back buffer will get in sync only after Clear or Flush function calls.
func Size() (width int, height int) {
return termw, termh
}
// Clears the internal back buffer.
func Clear(fg, bg Attribute) error {
foreground, background = fg, bg
err := update_size_maybe()
back_buffer.clear()
return err
}
// Sets termbox input mode. Termbox has two input modes:
//
// 1. Esc input mode. When ESC sequence is in the buffer and it doesn't match
// any known sequence. ESC means KeyEsc. This is the default input mode.
//
// 2. Alt input mode. When ESC sequence is in the buffer and it doesn't match
// any known sequence. ESC enables ModAlt modifier for the next keyboard event.
//
// Both input modes can be OR'ed with Mouse mode. Setting Mouse mode bit up will
// enable mouse button press/release and drag events.
//
// If 'mode' is InputCurrent, returns the current input mode. See also Input*
// constants.
func SetInputMode(mode InputMode) InputMode {
if mode == InputCurrent {
return input_mode
}
if mode&(InputEsc|InputAlt) == 0 {
mode |= InputEsc
}
if mode&(InputEsc|InputAlt) == InputEsc|InputAlt {
mode &^= InputAlt
}
if mode&InputMouse != 0 {
out.WriteString(funcs[t_enter_mouse])
} else {
out.WriteString(funcs[t_exit_mouse])
}
input_mode = mode
return input_mode
}
// Sets the termbox output mode. Termbox has four output options:
//
// 1. OutputNormal => [1..8]
// This mode provides 8 different colors:
// black, red, green, yellow, blue, magenta, cyan, white
// Shortcut: ColorBlack, ColorRed, ...
// Attributes: AttrBold, AttrUnderline, AttrReverse
//
// Example usage:
// SetCell(x, y, '@', ColorBlack | AttrBold, ColorRed);
//
// 2. Output256 => [1..256]
// In this mode you can leverage the 256 terminal mode:
// 0x01 - 0x08: the 8 colors as in OutputNormal
// 0x09 - 0x10: Color* | AttrBold
// 0x11 - 0xe8: 216 different colors
// 0xe9 - 0x1ff: 24 different shades of grey
//
// Example usage:
// SetCell(x, y, '@', 184, 240);
// SetCell(x, y, '@', 0xb8, 0xf0);
//
// 3. Output216 => [1..216]
// This mode supports the 3rd range of the 256 mode only.
// But you dont need to provide an offset.
//
// 4. OutputGrayscale => [1..26]
// This mode supports the 4th range of the 256 mode
// and black and white colors from 3th range of the 256 mode
// But you dont need to provide an offset.
//
// In all modes, 0x00 represents the default color.
//
// `go run _demos/output.go` to see its impact on your terminal.
//
// If 'mode' is OutputCurrent, it returns the current output mode.
//
// Note that this may return a different OutputMode than the one requested,
// as the requested mode may not be available on the target platform.
func SetOutputMode(mode OutputMode) OutputMode {
if mode == OutputCurrent {
return output_mode
}
output_mode = mode
return output_mode
}
// Sync comes handy when something causes desync between termbox's understanding
// of a terminal buffer and the reality. Such as a third party process. Sync
// forces a complete resync between the termbox and a terminal, it may not be
// visually pretty though.
func Sync() error {
front_buffer.clear()
err := send_clear()
if err != nil {
return err
}
return Flush()
}

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// termbox is a library for creating cross-platform text-based interfaces
package termbox
// public API, common OS agnostic part
type (
InputMode int
OutputMode int
EventType uint8
Modifier uint8
Key uint16
Attribute uint16
)
// This type represents a termbox event. The 'Mod', 'Key' and 'Ch' fields are
// valid if 'Type' is EventKey. The 'Width' and 'Height' fields are valid if
// 'Type' is EventResize. The 'Err' field is valid if 'Type' is EventError.
type Event struct {
Type EventType // one of Event* constants
Mod Modifier // one of Mod* constants or 0
Key Key // one of Key* constants, invalid if 'Ch' is not 0
Ch rune // a unicode character
Width int // width of the screen
Height int // height of the screen
Err error // error in case if input failed
MouseX int // x coord of mouse
MouseY int // y coord of mouse
N int // number of bytes written when getting a raw event
}
// A cell, single conceptual entity on the screen. The screen is basically a 2d
// array of cells. 'Ch' is a unicode character, 'Fg' and 'Bg' are foreground
// and background attributes respectively.
type Cell struct {
Ch rune
Fg Attribute
Bg Attribute
}
// To know if termbox has been initialized or not
var (
IsInit bool = false
)
// Key constants, see Event.Key field.
const (
KeyF1 Key = 0xFFFF - iota
KeyF2
KeyF3
KeyF4
KeyF5
KeyF6
KeyF7
KeyF8
KeyF9
KeyF10
KeyF11
KeyF12
KeyInsert
KeyDelete
KeyHome
KeyEnd
KeyPgup
KeyPgdn
KeyArrowUp
KeyArrowDown
KeyArrowLeft
KeyArrowRight
key_min // see terminfo
MouseLeft
MouseMiddle
MouseRight
MouseRelease
MouseWheelUp
MouseWheelDown
)
const (
KeyCtrlTilde Key = 0x00
KeyCtrl2 Key = 0x00
KeyCtrlSpace Key = 0x00
KeyCtrlA Key = 0x01
KeyCtrlB Key = 0x02
KeyCtrlC Key = 0x03
KeyCtrlD Key = 0x04
KeyCtrlE Key = 0x05
KeyCtrlF Key = 0x06
KeyCtrlG Key = 0x07
KeyBackspace Key = 0x08
KeyCtrlH Key = 0x08
KeyTab Key = 0x09
KeyCtrlI Key = 0x09
KeyCtrlJ Key = 0x0A
KeyCtrlK Key = 0x0B
KeyCtrlL Key = 0x0C
KeyEnter Key = 0x0D
KeyCtrlM Key = 0x0D
KeyCtrlN Key = 0x0E
KeyCtrlO Key = 0x0F
KeyCtrlP Key = 0x10
KeyCtrlQ Key = 0x11
KeyCtrlR Key = 0x12
KeyCtrlS Key = 0x13
KeyCtrlT Key = 0x14
KeyCtrlU Key = 0x15
KeyCtrlV Key = 0x16
KeyCtrlW Key = 0x17
KeyCtrlX Key = 0x18
KeyCtrlY Key = 0x19
KeyCtrlZ Key = 0x1A
KeyEsc Key = 0x1B
KeyCtrlLsqBracket Key = 0x1B
KeyCtrl3 Key = 0x1B
KeyCtrl4 Key = 0x1C
KeyCtrlBackslash Key = 0x1C
KeyCtrl5 Key = 0x1D
KeyCtrlRsqBracket Key = 0x1D
KeyCtrl6 Key = 0x1E
KeyCtrl7 Key = 0x1F
KeyCtrlSlash Key = 0x1F
KeyCtrlUnderscore Key = 0x1F
KeySpace Key = 0x20
KeyBackspace2 Key = 0x7F
KeyCtrl8 Key = 0x7F
)
// Alt modifier constant, see Event.Mod field and SetInputMode function.
const (
ModAlt Modifier = 1 << iota
ModMotion
)
// Cell colors, you can combine a color with multiple attributes using bitwise
// OR ('|').
const (
ColorDefault Attribute = iota
ColorBlack
ColorRed
ColorGreen
ColorYellow
ColorBlue
ColorMagenta
ColorCyan
ColorWhite
)
// Cell attributes, it is possible to use multiple attributes by combining them
// using bitwise OR ('|'). Although, colors cannot be combined. But you can
// combine attributes and a single color.
//
// It's worth mentioning that some platforms don't support certain attibutes.
// For example windows console doesn't support AttrUnderline. And on some
// terminals applying AttrBold to background may result in blinking text. Use
// them with caution and test your code on various terminals.
const (
AttrBold Attribute = 1 << (iota + 9)
AttrUnderline
AttrReverse
)
// Input mode. See SetInputMode function.
const (
InputEsc InputMode = 1 << iota
InputAlt
InputMouse
InputCurrent InputMode = 0
)
// Output mode. See SetOutputMode function.
const (
OutputCurrent OutputMode = iota
OutputNormal
Output256
Output216
OutputGrayscale
)
// Event type. See Event.Type field.
const (
EventKey EventType = iota
EventResize
EventMouse
EventError
EventInterrupt
EventRaw
EventNone
)

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package termbox
import (
"syscall"
)
// public API
// Initializes termbox library. This function should be called before any other functions.
// After successful initialization, the library must be finalized using 'Close' function.
//
// Example usage:
// err := termbox.Init()
// if err != nil {
// panic(err)
// }
// defer termbox.Close()
func Init() error {
var err error
interrupt, err = create_event()
if err != nil {
return err
}
in, err = syscall.Open("CONIN$", syscall.O_RDWR, 0)
if err != nil {
return err
}
out, err = syscall.Open("CONOUT$", syscall.O_RDWR, 0)
if err != nil {
return err
}
err = get_console_mode(in, &orig_mode)
if err != nil {
return err
}
err = set_console_mode(in, enable_window_input)
if err != nil {
return err
}
orig_size = get_term_size(out)
win_size := get_win_size(out)
err = set_console_screen_buffer_size(out, win_size)
if err != nil {
return err
}
err = get_console_cursor_info(out, &orig_cursor_info)
if err != nil {
return err
}
show_cursor(false)
term_size = get_term_size(out)
back_buffer.init(int(term_size.x), int(term_size.y))
front_buffer.init(int(term_size.x), int(term_size.y))
back_buffer.clear()
front_buffer.clear()
clear()
diffbuf = make([]diff_msg, 0, 32)
go input_event_producer()
IsInit = true
return nil
}
// Finalizes termbox library, should be called after successful initialization
// when termbox's functionality isn't required anymore.
func Close() {
// we ignore errors here, because we can't really do anything about them
Clear(0, 0)
Flush()
// stop event producer
cancel_comm <- true
set_event(interrupt)
select {
case <-input_comm:
default:
}
<-cancel_done_comm
set_console_cursor_info(out, &orig_cursor_info)
set_console_cursor_position(out, coord{})
set_console_screen_buffer_size(out, orig_size)
set_console_mode(in, orig_mode)
syscall.Close(in)
syscall.Close(out)
syscall.Close(interrupt)
IsInit = false
}
// Interrupt an in-progress call to PollEvent by causing it to return
// EventInterrupt. Note that this function will block until the PollEvent
// function has successfully been interrupted.
func Interrupt() {
interrupt_comm <- struct{}{}
}
// Synchronizes the internal back buffer with the terminal.
func Flush() error {
update_size_maybe()
prepare_diff_messages()
for _, diff := range diffbuf {
r := small_rect{
left: 0,
top: diff.pos,
right: term_size.x - 1,
bottom: diff.pos + diff.lines - 1,
}
write_console_output(out, diff.chars, r)
}
if !is_cursor_hidden(cursor_x, cursor_y) {
move_cursor(cursor_x, cursor_y)
}
return nil
}
// Sets the position of the cursor. See also HideCursor().
func SetCursor(x, y int) {
if is_cursor_hidden(cursor_x, cursor_y) && !is_cursor_hidden(x, y) {
show_cursor(true)
}
if !is_cursor_hidden(cursor_x, cursor_y) && is_cursor_hidden(x, y) {
show_cursor(false)
}
cursor_x, cursor_y = x, y
if !is_cursor_hidden(cursor_x, cursor_y) {
move_cursor(cursor_x, cursor_y)
}
}
// The shortcut for SetCursor(-1, -1).
func HideCursor() {
SetCursor(cursor_hidden, cursor_hidden)
}
// Changes cell's parameters in the internal back buffer at the specified
// position.
func SetCell(x, y int, ch rune, fg, bg Attribute) {
if x < 0 || x >= back_buffer.width {
return
}
if y < 0 || y >= back_buffer.height {
return
}
back_buffer.cells[y*back_buffer.width+x] = Cell{ch, fg, bg}
}
// Returns a slice into the termbox's back buffer. You can get its dimensions
// using 'Size' function. The slice remains valid as long as no 'Clear' or
// 'Flush' function calls were made after call to this function.
func CellBuffer() []Cell {
return back_buffer.cells
}
// Wait for an event and return it. This is a blocking function call.
func PollEvent() Event {
select {
case ev := <-input_comm:
return ev
case <-interrupt_comm:
return Event{Type: EventInterrupt}
}
}
// Returns the size of the internal back buffer (which is mostly the same as
// console's window size in characters). But it doesn't always match the size
// of the console window, after the console size has changed, the internal back
// buffer will get in sync only after Clear or Flush function calls.
func Size() (int, int) {
return int(term_size.x), int(term_size.y)
}
// Clears the internal back buffer.
func Clear(fg, bg Attribute) error {
foreground, background = fg, bg
update_size_maybe()
back_buffer.clear()
return nil
}
// Sets termbox input mode. Termbox has two input modes:
//
// 1. Esc input mode. When ESC sequence is in the buffer and it doesn't match
// any known sequence. ESC means KeyEsc. This is the default input mode.
//
// 2. Alt input mode. When ESC sequence is in the buffer and it doesn't match
// any known sequence. ESC enables ModAlt modifier for the next keyboard event.
//
// Both input modes can be OR'ed with Mouse mode. Setting Mouse mode bit up will
// enable mouse button press/release and drag events.
//
// If 'mode' is InputCurrent, returns the current input mode. See also Input*
// constants.
func SetInputMode(mode InputMode) InputMode {
if mode == InputCurrent {
return input_mode
}
if mode&InputMouse != 0 {
err := set_console_mode(in, enable_window_input|enable_mouse_input|enable_extended_flags)
if err != nil {
panic(err)
}
} else {
err := set_console_mode(in, enable_window_input)
if err != nil {
panic(err)
}
}
input_mode = mode
return input_mode
}
// Sets the termbox output mode.
//
// Windows console does not support extra colour modes,
// so this will always set and return OutputNormal.
func SetOutputMode(mode OutputMode) OutputMode {
return OutputNormal
}
// Sync comes handy when something causes desync between termbox's understanding
// of a terminal buffer and the reality. Such as a third party process. Sync
// forces a complete resync between the termbox and a terminal, it may not be
// visually pretty though. At the moment on Windows it does nothing.
func Sync() error {
return nil
}

110
vendor/github.com/nsf/termbox-go/collect_terminfo.py generated vendored
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@ -1,110 +0,0 @@
#!/usr/bin/env python
import sys, os, subprocess
def escaped(s):
return repr(s)[1:-1]
def tput(term, name):
try:
return subprocess.check_output(['tput', '-T%s' % term, name]).decode()
except subprocess.CalledProcessError as e:
return e.output.decode()
def w(s):
if s == None:
return
sys.stdout.write(s)
terminals = {
'xterm' : 'xterm',
'rxvt-256color' : 'rxvt_256color',
'rxvt-unicode' : 'rxvt_unicode',
'linux' : 'linux',
'Eterm' : 'eterm',
'screen' : 'screen'
}
keys = [
"F1", "kf1",
"F2", "kf2",
"F3", "kf3",
"F4", "kf4",
"F5", "kf5",
"F6", "kf6",
"F7", "kf7",
"F8", "kf8",
"F9", "kf9",
"F10", "kf10",
"F11", "kf11",
"F12", "kf12",
"INSERT", "kich1",
"DELETE", "kdch1",
"HOME", "khome",
"END", "kend",
"PGUP", "kpp",
"PGDN", "knp",
"KEY_UP", "kcuu1",
"KEY_DOWN", "kcud1",
"KEY_LEFT", "kcub1",
"KEY_RIGHT", "kcuf1"
]
funcs = [
"T_ENTER_CA", "smcup",
"T_EXIT_CA", "rmcup",
"T_SHOW_CURSOR", "cnorm",
"T_HIDE_CURSOR", "civis",
"T_CLEAR_SCREEN", "clear",
"T_SGR0", "sgr0",
"T_UNDERLINE", "smul",
"T_BOLD", "bold",
"T_BLINK", "blink",
"T_REVERSE", "rev",
"T_ENTER_KEYPAD", "smkx",
"T_EXIT_KEYPAD", "rmkx"
]
def iter_pairs(iterable):
iterable = iter(iterable)
while True:
yield (next(iterable), next(iterable))
def do_term(term, nick):
w("// %s\n" % term)
w("var %s_keys = []string{\n\t" % nick)
for k, v in iter_pairs(keys):
w('"')
w(escaped(tput(term, v)))
w('",')
w("\n}\n")
w("var %s_funcs = []string{\n\t" % nick)
for k,v in iter_pairs(funcs):
w('"')
if v == "sgr":
w("\\033[3%d;4%dm")
elif v == "cup":
w("\\033[%d;%dH")
else:
w(escaped(tput(term, v)))
w('", ')
w("\n}\n\n")
def do_terms(d):
w("var terms = []struct {\n")
w("\tname string\n")
w("\tkeys []string\n")
w("\tfuncs []string\n")
w("}{\n")
for k, v in d.items():
w('\t{"%s", %s_keys, %s_funcs},\n' % (k, v, v))
w("}\n\n")
w("// +build !windows\n\npackage termbox\n\n")
for k,v in terminals.items():
do_term(k, v)
do_terms(terminals)

39
vendor/github.com/nsf/termbox-go/syscalls.go generated vendored
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@ -1,39 +0,0 @@
// +build ignore
package termbox
/*
#include <termios.h>
#include <sys/ioctl.h>
*/
import "C"
type syscall_Termios C.struct_termios
const (
syscall_IGNBRK = C.IGNBRK
syscall_BRKINT = C.BRKINT
syscall_PARMRK = C.PARMRK
syscall_ISTRIP = C.ISTRIP
syscall_INLCR = C.INLCR
syscall_IGNCR = C.IGNCR
syscall_ICRNL = C.ICRNL
syscall_IXON = C.IXON
syscall_OPOST = C.OPOST
syscall_ECHO = C.ECHO
syscall_ECHONL = C.ECHONL
syscall_ICANON = C.ICANON
syscall_ISIG = C.ISIG
syscall_IEXTEN = C.IEXTEN
syscall_CSIZE = C.CSIZE
syscall_PARENB = C.PARENB
syscall_CS8 = C.CS8
syscall_VMIN = C.VMIN
syscall_VTIME = C.VTIME
// on darwin change these to (on *bsd too?):
// C.TIOCGETA
// C.TIOCSETA
syscall_TCGETS = C.TCGETS
syscall_TCSETS = C.TCSETS
)

41
vendor/github.com/nsf/termbox-go/syscalls_darwin.go generated vendored
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@ -1,41 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs syscalls.go
// +build !amd64
package termbox
type syscall_Termios struct {
Iflag uint32
Oflag uint32
Cflag uint32
Lflag uint32
Cc [20]uint8
Ispeed uint32
Ospeed uint32
}
const (
syscall_IGNBRK = 0x1
syscall_BRKINT = 0x2
syscall_PARMRK = 0x8
syscall_ISTRIP = 0x20
syscall_INLCR = 0x40
syscall_IGNCR = 0x80
syscall_ICRNL = 0x100
syscall_IXON = 0x200
syscall_OPOST = 0x1
syscall_ECHO = 0x8
syscall_ECHONL = 0x10
syscall_ICANON = 0x100
syscall_ISIG = 0x80
syscall_IEXTEN = 0x400
syscall_CSIZE = 0x300
syscall_PARENB = 0x1000
syscall_CS8 = 0x300
syscall_VMIN = 0x10
syscall_VTIME = 0x11
syscall_TCGETS = 0x402c7413
syscall_TCSETS = 0x802c7414
)

40
vendor/github.com/nsf/termbox-go/syscalls_darwin_amd64.go generated vendored
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@ -1,40 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs syscalls.go
package termbox
type syscall_Termios struct {
Iflag uint64
Oflag uint64
Cflag uint64
Lflag uint64
Cc [20]uint8
Pad_cgo_0 [4]byte
Ispeed uint64
Ospeed uint64
}
const (
syscall_IGNBRK = 0x1
syscall_BRKINT = 0x2
syscall_PARMRK = 0x8
syscall_ISTRIP = 0x20
syscall_INLCR = 0x40
syscall_IGNCR = 0x80
syscall_ICRNL = 0x100
syscall_IXON = 0x200
syscall_OPOST = 0x1
syscall_ECHO = 0x8
syscall_ECHONL = 0x10
syscall_ICANON = 0x100
syscall_ISIG = 0x80
syscall_IEXTEN = 0x400
syscall_CSIZE = 0x300
syscall_PARENB = 0x1000
syscall_CS8 = 0x300
syscall_VMIN = 0x10
syscall_VTIME = 0x11
syscall_TCGETS = 0x40487413
syscall_TCSETS = 0x80487414
)

39
vendor/github.com/nsf/termbox-go/syscalls_dragonfly.go generated vendored
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@ -1,39 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs syscalls.go
package termbox
type syscall_Termios struct {
Iflag uint32
Oflag uint32
Cflag uint32
Lflag uint32
Cc [20]uint8
Ispeed uint32
Ospeed uint32
}
const (
syscall_IGNBRK = 0x1
syscall_BRKINT = 0x2
syscall_PARMRK = 0x8
syscall_ISTRIP = 0x20
syscall_INLCR = 0x40
syscall_IGNCR = 0x80
syscall_ICRNL = 0x100
syscall_IXON = 0x200
syscall_OPOST = 0x1
syscall_ECHO = 0x8
syscall_ECHONL = 0x10
syscall_ICANON = 0x100
syscall_ISIG = 0x80
syscall_IEXTEN = 0x400
syscall_CSIZE = 0x300
syscall_PARENB = 0x1000
syscall_CS8 = 0x300
syscall_VMIN = 0x10
syscall_VTIME = 0x11
syscall_TCGETS = 0x402c7413
syscall_TCSETS = 0x802c7414
)

39
vendor/github.com/nsf/termbox-go/syscalls_freebsd.go generated vendored
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@ -1,39 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs syscalls.go
package termbox
type syscall_Termios struct {
Iflag uint32
Oflag uint32
Cflag uint32
Lflag uint32
Cc [20]uint8
Ispeed uint32
Ospeed uint32
}
const (
syscall_IGNBRK = 0x1
syscall_BRKINT = 0x2
syscall_PARMRK = 0x8
syscall_ISTRIP = 0x20
syscall_INLCR = 0x40
syscall_IGNCR = 0x80
syscall_ICRNL = 0x100
syscall_IXON = 0x200
syscall_OPOST = 0x1
syscall_ECHO = 0x8
syscall_ECHONL = 0x10
syscall_ICANON = 0x100
syscall_ISIG = 0x80
syscall_IEXTEN = 0x400
syscall_CSIZE = 0x300
syscall_PARENB = 0x1000
syscall_CS8 = 0x300
syscall_VMIN = 0x10
syscall_VTIME = 0x11
syscall_TCGETS = 0x402c7413
syscall_TCSETS = 0x802c7414
)

33
vendor/github.com/nsf/termbox-go/syscalls_linux.go generated vendored
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@ -1,33 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs syscalls.go
package termbox
import "syscall"
type syscall_Termios syscall.Termios
const (
syscall_IGNBRK = syscall.IGNBRK
syscall_BRKINT = syscall.BRKINT
syscall_PARMRK = syscall.PARMRK
syscall_ISTRIP = syscall.ISTRIP
syscall_INLCR = syscall.INLCR
syscall_IGNCR = syscall.IGNCR
syscall_ICRNL = syscall.ICRNL
syscall_IXON = syscall.IXON
syscall_OPOST = syscall.OPOST
syscall_ECHO = syscall.ECHO
syscall_ECHONL = syscall.ECHONL
syscall_ICANON = syscall.ICANON
syscall_ISIG = syscall.ISIG
syscall_IEXTEN = syscall.IEXTEN
syscall_CSIZE = syscall.CSIZE
syscall_PARENB = syscall.PARENB
syscall_CS8 = syscall.CS8
syscall_VMIN = syscall.VMIN
syscall_VTIME = syscall.VTIME
syscall_TCGETS = syscall.TCGETS
syscall_TCSETS = syscall.TCSETS
)

39
vendor/github.com/nsf/termbox-go/syscalls_netbsd.go generated vendored
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@ -1,39 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs syscalls.go
package termbox
type syscall_Termios struct {
Iflag uint32
Oflag uint32
Cflag uint32
Lflag uint32
Cc [20]uint8
Ispeed int32
Ospeed int32
}
const (
syscall_IGNBRK = 0x1
syscall_BRKINT = 0x2
syscall_PARMRK = 0x8
syscall_ISTRIP = 0x20
syscall_INLCR = 0x40
syscall_IGNCR = 0x80
syscall_ICRNL = 0x100
syscall_IXON = 0x200
syscall_OPOST = 0x1
syscall_ECHO = 0x8
syscall_ECHONL = 0x10
syscall_ICANON = 0x100
syscall_ISIG = 0x80
syscall_IEXTEN = 0x400
syscall_CSIZE = 0x300
syscall_PARENB = 0x1000
syscall_CS8 = 0x300
syscall_VMIN = 0x10
syscall_VTIME = 0x11
syscall_TCGETS = 0x402c7413
syscall_TCSETS = 0x802c7414
)

39
vendor/github.com/nsf/termbox-go/syscalls_openbsd.go generated vendored
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@ -1,39 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs syscalls.go
package termbox
type syscall_Termios struct {
Iflag uint32
Oflag uint32
Cflag uint32
Lflag uint32
Cc [20]uint8
Ispeed int32
Ospeed int32
}
const (
syscall_IGNBRK = 0x1
syscall_BRKINT = 0x2
syscall_PARMRK = 0x8
syscall_ISTRIP = 0x20
syscall_INLCR = 0x40
syscall_IGNCR = 0x80
syscall_ICRNL = 0x100
syscall_IXON = 0x200
syscall_OPOST = 0x1
syscall_ECHO = 0x8
syscall_ECHONL = 0x10
syscall_ICANON = 0x100
syscall_ISIG = 0x80
syscall_IEXTEN = 0x400
syscall_CSIZE = 0x300
syscall_PARENB = 0x1000
syscall_CS8 = 0x300
syscall_VMIN = 0x10
syscall_VTIME = 0x11
syscall_TCGETS = 0x402c7413
syscall_TCSETS = 0x802c7414
)

61
vendor/github.com/nsf/termbox-go/syscalls_windows.go generated vendored
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@ -1,61 +0,0 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs -- -DUNICODE syscalls.go
package termbox
const (
foreground_blue = 0x1
foreground_green = 0x2
foreground_red = 0x4
foreground_intensity = 0x8
background_blue = 0x10
background_green = 0x20
background_red = 0x40
background_intensity = 0x80
std_input_handle = -0xa
std_output_handle = -0xb
key_event = 0x1
mouse_event = 0x2
window_buffer_size_event = 0x4
enable_window_input = 0x8
enable_mouse_input = 0x10
enable_extended_flags = 0x80
vk_f1 = 0x70
vk_f2 = 0x71
vk_f3 = 0x72
vk_f4 = 0x73
vk_f5 = 0x74
vk_f6 = 0x75
vk_f7 = 0x76
vk_f8 = 0x77
vk_f9 = 0x78
vk_f10 = 0x79
vk_f11 = 0x7a
vk_f12 = 0x7b
vk_insert = 0x2d
vk_delete = 0x2e
vk_home = 0x24
vk_end = 0x23
vk_pgup = 0x21
vk_pgdn = 0x22
vk_arrow_up = 0x26
vk_arrow_down = 0x28
vk_arrow_left = 0x25
vk_arrow_right = 0x27
vk_backspace = 0x8
vk_tab = 0x9
vk_enter = 0xd
vk_esc = 0x1b
vk_space = 0x20
left_alt_pressed = 0x2
left_ctrl_pressed = 0x8
right_alt_pressed = 0x1
right_ctrl_pressed = 0x4
shift_pressed = 0x10
generic_read = 0x80000000
generic_write = 0x40000000
console_textmode_buffer = 0x1
)

511
vendor/github.com/nsf/termbox-go/termbox.go generated vendored
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@ -1,511 +0,0 @@
// +build !windows
package termbox
import "unicode/utf8"
import "bytes"
import "syscall"
import "unsafe"
import "strings"
import "strconv"
import "os"
import "io"
// private API
const (
t_enter_ca = iota
t_exit_ca
t_show_cursor
t_hide_cursor
t_clear_screen
t_sgr0
t_underline
t_bold
t_blink
t_reverse
t_enter_keypad
t_exit_keypad
t_enter_mouse
t_exit_mouse
t_max_funcs
)
const (
coord_invalid = -2
attr_invalid = Attribute(0xFFFF)
)
type input_event struct {
data []byte
err error
}
var (
// term specific sequences
keys []string
funcs []string
// termbox inner state
orig_tios syscall_Termios
back_buffer cellbuf
front_buffer cellbuf
termw int
termh int
input_mode = InputEsc
output_mode = OutputNormal
out *os.File
in int
lastfg = attr_invalid
lastbg = attr_invalid
lastx = coord_invalid
lasty = coord_invalid
cursor_x = cursor_hidden
cursor_y = cursor_hidden
foreground = ColorDefault
background = ColorDefault
inbuf = make([]byte, 0, 64)
outbuf bytes.Buffer
sigwinch = make(chan os.Signal, 1)
sigio = make(chan os.Signal, 1)
quit = make(chan int)
input_comm = make(chan input_event)
interrupt_comm = make(chan struct{})
intbuf = make([]byte, 0, 16)
// grayscale indexes
grayscale = []Attribute{
0, 17, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244,
245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 232,
}
)
func write_cursor(x, y int) {
outbuf.WriteString("\033[")
outbuf.Write(strconv.AppendUint(intbuf, uint64(y+1), 10))
outbuf.WriteString(";")
outbuf.Write(strconv.AppendUint(intbuf, uint64(x+1), 10))
outbuf.WriteString("H")
}
func write_sgr_fg(a Attribute) {
switch output_mode {
case Output256, Output216, OutputGrayscale:
outbuf.WriteString("\033[38;5;")
outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
outbuf.WriteString("m")
default:
outbuf.WriteString("\033[3")
outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
outbuf.WriteString("m")
}
}
func write_sgr_bg(a Attribute) {
switch output_mode {
case Output256, Output216, OutputGrayscale:
outbuf.WriteString("\033[48;5;")
outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
outbuf.WriteString("m")
default:
outbuf.WriteString("\033[4")
outbuf.Write(strconv.AppendUint(intbuf, uint64(a-1), 10))
outbuf.WriteString("m")
}
}
func write_sgr(fg, bg Attribute) {
switch output_mode {
case Output256, Output216, OutputGrayscale:
outbuf.WriteString("\033[38;5;")
outbuf.Write(strconv.AppendUint(intbuf, uint64(fg-1), 10))
outbuf.WriteString("m")
outbuf.WriteString("\033[48;5;")
outbuf.Write(strconv.AppendUint(intbuf, uint64(bg-1), 10))
outbuf.WriteString("m")
default:
outbuf.WriteString("\033[3")
outbuf.Write(strconv.AppendUint(intbuf, uint64(fg-1), 10))
outbuf.WriteString(";4")
outbuf.Write(strconv.AppendUint(intbuf, uint64(bg-1), 10))
outbuf.WriteString("m")
}
}
type winsize struct {
rows uint16
cols uint16
xpixels uint16
ypixels uint16
}
func get_term_size(fd uintptr) (int, int) {
var sz winsize
_, _, _ = syscall.Syscall(syscall.SYS_IOCTL,
fd, uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&sz)))
return int(sz.cols), int(sz.rows)
}
func send_attr(fg, bg Attribute) {
if fg == lastfg && bg == lastbg {
return
}
outbuf.WriteString(funcs[t_sgr0])
var fgcol, bgcol Attribute
switch output_mode {
case Output256:
fgcol = fg & 0x1FF
bgcol = bg & 0x1FF
case Output216:
fgcol = fg & 0xFF
bgcol = bg & 0xFF
if fgcol > 216 {
fgcol = ColorDefault
}
if bgcol > 216 {
bgcol = ColorDefault
}
if fgcol != ColorDefault {
fgcol += 0x10
}
if bgcol != ColorDefault {
bgcol += 0x10
}
case OutputGrayscale:
fgcol = fg & 0x1F
bgcol = bg & 0x1F
if fgcol > 26 {
fgcol = ColorDefault
}
if bgcol > 26 {
bgcol = ColorDefault
}
if fgcol != ColorDefault {
fgcol = grayscale[fgcol]
}
if bgcol != ColorDefault {
bgcol = grayscale[bgcol]
}
default:
fgcol = fg & 0x0F
bgcol = bg & 0x0F
}
if fgcol != ColorDefault {
if bgcol != ColorDefault {
write_sgr(fgcol, bgcol)
} else {
write_sgr_fg(fgcol)
}
} else if bgcol != ColorDefault {
write_sgr_bg(bgcol)
}
if fg&AttrBold != 0 {
outbuf.WriteString(funcs[t_bold])
}
if bg&AttrBold != 0 {
outbuf.WriteString(funcs[t_blink])
}
if fg&AttrUnderline != 0 {
outbuf.WriteString(funcs[t_underline])
}
if fg&AttrReverse|bg&AttrReverse != 0 {
outbuf.WriteString(funcs[t_reverse])
}
lastfg, lastbg = fg, bg
}
func send_char(x, y int, ch rune) {
var buf [8]byte
n := utf8.EncodeRune(buf[:], ch)
if x-1 != lastx || y != lasty {
write_cursor(x, y)
}
lastx, lasty = x, y
outbuf.Write(buf[:n])
}
func flush() error {
_, err := io.Copy(out, &outbuf)
outbuf.Reset()
return err
}
func send_clear() error {
send_attr(foreground, background)
outbuf.WriteString(funcs[t_clear_screen])
if !is_cursor_hidden(cursor_x, cursor_y) {
write_cursor(cursor_x, cursor_y)
}
// we need to invalidate cursor position too and these two vars are
// used only for simple cursor positioning optimization, cursor
// actually may be in the correct place, but we simply discard
// optimization once and it gives us simple solution for the case when
// cursor moved
lastx = coord_invalid
lasty = coord_invalid
return flush()
}
func update_size_maybe() error {
w, h := get_term_size(out.Fd())
if w != termw || h != termh {
termw, termh = w, h
back_buffer.resize(termw, termh)
front_buffer.resize(termw, termh)
front_buffer.clear()
return send_clear()
}
return nil
}
func tcsetattr(fd uintptr, termios *syscall_Termios) error {
r, _, e := syscall.Syscall(syscall.SYS_IOCTL,
fd, uintptr(syscall_TCSETS), uintptr(unsafe.Pointer(termios)))
if r != 0 {
return os.NewSyscallError("SYS_IOCTL", e)
}
return nil
}
func tcgetattr(fd uintptr, termios *syscall_Termios) error {
r, _, e := syscall.Syscall(syscall.SYS_IOCTL,
fd, uintptr(syscall_TCGETS), uintptr(unsafe.Pointer(termios)))
if r != 0 {
return os.NewSyscallError("SYS_IOCTL", e)
}
return nil
}
func parse_mouse_event(event *Event, buf string) (int, bool) {
if strings.HasPrefix(buf, "\033[M") && len(buf) >= 6 {
// X10 mouse encoding, the simplest one
// \033 [ M Cb Cx Cy
b := buf[3] - 32
switch b & 3 {
case 0:
if b&64 != 0 {
event.Key = MouseWheelUp
} else {
event.Key = MouseLeft
}
case 1:
if b&64 != 0 {
event.Key = MouseWheelDown
} else {
event.Key = MouseMiddle
}
case 2:
event.Key = MouseRight
case 3:
event.Key = MouseRelease
default:
return 6, false
}
event.Type = EventMouse // KeyEvent by default
if b&32 != 0 {
event.Mod |= ModMotion
}
// the coord is 1,1 for upper left
event.MouseX = int(buf[4]) - 1 - 32
event.MouseY = int(buf[5]) - 1 - 32
return 6, true
} else if strings.HasPrefix(buf, "\033[<") || strings.HasPrefix(buf, "\033[") {
// xterm 1006 extended mode or urxvt 1015 extended mode
// xterm: \033 [ < Cb ; Cx ; Cy (M or m)
// urxvt: \033 [ Cb ; Cx ; Cy M
// find the first M or m, that's where we stop
mi := strings.IndexAny(buf, "Mm")
if mi == -1 {
return 0, false
}
// whether it's a capital M or not
isM := buf[mi] == 'M'
// whether it's urxvt or not
isU := false
// buf[2] is safe here, because having M or m found means we have at
// least 3 bytes in a string
if buf[2] == '<' {
buf = buf[3:mi]
} else {
isU = true
buf = buf[2:mi]
}
s1 := strings.Index(buf, ";")
s2 := strings.LastIndex(buf, ";")
// not found or only one ';'
if s1 == -1 || s2 == -1 || s1 == s2 {
return 0, false
}
n1, err := strconv.ParseInt(buf[0:s1], 10, 64)
if err != nil {
return 0, false
}
n2, err := strconv.ParseInt(buf[s1+1:s2], 10, 64)
if err != nil {
return 0, false
}
n3, err := strconv.ParseInt(buf[s2+1:], 10, 64)
if err != nil {
return 0, false
}
// on urxvt, first number is encoded exactly as in X10, but we need to
// make it zero-based, on xterm it is zero-based already
if isU {
n1 -= 32
}
switch n1 & 3 {
case 0:
if n1&64 != 0 {
event.Key = MouseWheelUp
} else {
event.Key = MouseLeft
}
case 1:
if n1&64 != 0 {
event.Key = MouseWheelDown
} else {
event.Key = MouseMiddle
}
case 2:
event.Key = MouseRight
case 3:
event.Key = MouseRelease
default:
return mi + 1, false
}
if !isM {
// on xterm mouse release is signaled by lowercase m
event.Key = MouseRelease
}
event.Type = EventMouse // KeyEvent by default
if n1&32 != 0 {
event.Mod |= ModMotion
}
event.MouseX = int(n2) - 1
event.MouseY = int(n3) - 1
return mi + 1, true
}
return 0, false
}
func parse_escape_sequence(event *Event, buf []byte) (int, bool) {
bufstr := string(buf)
for i, key := range keys {
if strings.HasPrefix(bufstr, key) {
event.Ch = 0
event.Key = Key(0xFFFF - i)
return len(key), true
}
}
// if none of the keys match, let's try mouse seqences
return parse_mouse_event(event, bufstr)
}
func extract_raw_event(data []byte, event *Event) bool {
if len(inbuf) == 0 {
return false
}
n := len(data)
if n == 0 {
return false
}
n = copy(data, inbuf)
copy(inbuf, inbuf[n:])
inbuf = inbuf[:len(inbuf)-n]
event.N = n
event.Type = EventRaw
return true
}
func extract_event(inbuf []byte, event *Event) bool {
if len(inbuf) == 0 {
event.N = 0
return false
}
if inbuf[0] == '\033' {
// possible escape sequence
if n, ok := parse_escape_sequence(event, inbuf); n != 0 {
event.N = n
return ok
}
// it's not escape sequence, then it's Alt or Esc, check input_mode
switch {
case input_mode&InputEsc != 0:
// if we're in escape mode, fill Esc event, pop buffer, return success
event.Ch = 0
event.Key = KeyEsc
event.Mod = 0
event.N = 1
return true
case input_mode&InputAlt != 0:
// if we're in alt mode, set Alt modifier to event and redo parsing
event.Mod = ModAlt
ok := extract_event(inbuf[1:], event)
if ok {
event.N++
} else {
event.N = 0
}
return ok
default:
panic("unreachable")
}
}
// if we're here, this is not an escape sequence and not an alt sequence
// so, it's a FUNCTIONAL KEY or a UNICODE character
// first of all check if it's a functional key
if Key(inbuf[0]) <= KeySpace || Key(inbuf[0]) == KeyBackspace2 {
// fill event, pop buffer, return success
event.Ch = 0
event.Key = Key(inbuf[0])
event.N = 1
return true
}
// the only possible option is utf8 rune
if r, n := utf8.DecodeRune(inbuf); r != utf8.RuneError {
event.Ch = r
event.Key = 0
event.N = n
return true
}
return false
}
func fcntl(fd int, cmd int, arg int) (val int, err error) {
r, _, e := syscall.Syscall(syscall.SYS_FCNTL, uintptr(fd), uintptr(cmd),
uintptr(arg))
val = int(r)
if e != 0 {
err = e
}
return
}

59
vendor/github.com/nsf/termbox-go/termbox_common.go generated vendored
View File

@ -1,59 +0,0 @@
package termbox
// private API, common OS agnostic part
type cellbuf struct {
width int
height int
cells []Cell
}
func (this *cellbuf) init(width, height int) {
this.width = width
this.height = height
this.cells = make([]Cell, width*height)
}
func (this *cellbuf) resize(width, height int) {
if this.width == width && this.height == height {
return
}
oldw := this.width
oldh := this.height
oldcells := this.cells
this.init(width, height)
this.clear()
minw, minh := oldw, oldh
if width < minw {
minw = width
}
if height < minh {
minh = height
}
for i := 0; i < minh; i++ {
srco, dsto := i*oldw, i*width
src := oldcells[srco : srco+minw]
dst := this.cells[dsto : dsto+minw]
copy(dst, src)
}
}
func (this *cellbuf) clear() {
for i := range this.cells {
c := &this.cells[i]
c.Ch = ' '
c.Fg = foreground
c.Bg = background
}
}
const cursor_hidden = -1
func is_cursor_hidden(x, y int) bool {
return x == cursor_hidden || y == cursor_hidden
}

856
vendor/github.com/nsf/termbox-go/termbox_windows.go generated vendored
View File

@ -1,856 +0,0 @@
package termbox
import "syscall"
import "unsafe"
import "unicode/utf16"
import "github.com/mattn/go-runewidth"
type (
wchar uint16
short int16
dword uint32
word uint16
char_info struct {
char wchar
attr word
}
coord struct {
x short
y short
}
small_rect struct {
left short
top short
right short
bottom short
}
console_screen_buffer_info struct {
size coord
cursor_position coord
attributes word
window small_rect
maximum_window_size coord
}
console_cursor_info struct {
size dword
visible int32
}
input_record struct {
event_type word
_ [2]byte
event [16]byte
}
key_event_record struct {
key_down int32
repeat_count word
virtual_key_code word
virtual_scan_code word
unicode_char wchar
control_key_state dword
}
window_buffer_size_record struct {
size coord
}
mouse_event_record struct {
mouse_pos coord
button_state dword
control_key_state dword
event_flags dword
}
)
const (
mouse_lmb = 0x1
mouse_rmb = 0x2
mouse_mmb = 0x4 | 0x8 | 0x10
)
func (this coord) uintptr() uintptr {
return uintptr(*(*int32)(unsafe.Pointer(&this)))
}
var kernel32 = syscall.NewLazyDLL("kernel32.dll")
var is_cjk = runewidth.IsEastAsian()
var (
proc_set_console_active_screen_buffer = kernel32.NewProc("SetConsoleActiveScreenBuffer")
proc_set_console_screen_buffer_size = kernel32.NewProc("SetConsoleScreenBufferSize")
proc_create_console_screen_buffer = kernel32.NewProc("CreateConsoleScreenBuffer")
proc_get_console_screen_buffer_info = kernel32.NewProc("GetConsoleScreenBufferInfo")
proc_write_console_output = kernel32.NewProc("WriteConsoleOutputW")
proc_write_console_output_character = kernel32.NewProc("WriteConsoleOutputCharacterW")
proc_write_console_output_attribute = kernel32.NewProc("WriteConsoleOutputAttribute")
proc_set_console_cursor_info = kernel32.NewProc("SetConsoleCursorInfo")
proc_set_console_cursor_position = kernel32.NewProc("SetConsoleCursorPosition")
proc_get_console_cursor_info = kernel32.NewProc("GetConsoleCursorInfo")
proc_read_console_input = kernel32.NewProc("ReadConsoleInputW")
proc_get_console_mode = kernel32.NewProc("GetConsoleMode")
proc_set_console_mode = kernel32.NewProc("SetConsoleMode")
proc_fill_console_output_character = kernel32.NewProc("FillConsoleOutputCharacterW")
proc_fill_console_output_attribute = kernel32.NewProc("FillConsoleOutputAttribute")
proc_create_event = kernel32.NewProc("CreateEventW")
proc_wait_for_multiple_objects = kernel32.NewProc("WaitForMultipleObjects")
proc_set_event = kernel32.NewProc("SetEvent")
)
func set_console_active_screen_buffer(h syscall.Handle) (err error) {
r0, _, e1 := syscall.Syscall(proc_set_console_active_screen_buffer.Addr(),
1, uintptr(h), 0, 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func set_console_screen_buffer_size(h syscall.Handle, size coord) (err error) {
r0, _, e1 := syscall.Syscall(proc_set_console_screen_buffer_size.Addr(),
2, uintptr(h), size.uintptr(), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func create_console_screen_buffer() (h syscall.Handle, err error) {
r0, _, e1 := syscall.Syscall6(proc_create_console_screen_buffer.Addr(),
5, uintptr(generic_read|generic_write), 0, 0, console_textmode_buffer, 0, 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return syscall.Handle(r0), err
}
func get_console_screen_buffer_info(h syscall.Handle, info *console_screen_buffer_info) (err error) {
r0, _, e1 := syscall.Syscall(proc_get_console_screen_buffer_info.Addr(),
2, uintptr(h), uintptr(unsafe.Pointer(info)), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func write_console_output(h syscall.Handle, chars []char_info, dst small_rect) (err error) {
tmp_coord = coord{dst.right - dst.left + 1, dst.bottom - dst.top + 1}
tmp_rect = dst
r0, _, e1 := syscall.Syscall6(proc_write_console_output.Addr(),
5, uintptr(h), uintptr(unsafe.Pointer(&chars[0])), tmp_coord.uintptr(),
tmp_coord0.uintptr(), uintptr(unsafe.Pointer(&tmp_rect)), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func write_console_output_character(h syscall.Handle, chars []wchar, pos coord) (err error) {
r0, _, e1 := syscall.Syscall6(proc_write_console_output_character.Addr(),
5, uintptr(h), uintptr(unsafe.Pointer(&chars[0])), uintptr(len(chars)),
pos.uintptr(), uintptr(unsafe.Pointer(&tmp_arg)), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func write_console_output_attribute(h syscall.Handle, attrs []word, pos coord) (err error) {
r0, _, e1 := syscall.Syscall6(proc_write_console_output_attribute.Addr(),
5, uintptr(h), uintptr(unsafe.Pointer(&attrs[0])), uintptr(len(attrs)),
pos.uintptr(), uintptr(unsafe.Pointer(&tmp_arg)), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func set_console_cursor_info(h syscall.Handle, info *console_cursor_info) (err error) {
r0, _, e1 := syscall.Syscall(proc_set_console_cursor_info.Addr(),
2, uintptr(h), uintptr(unsafe.Pointer(info)), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func get_console_cursor_info(h syscall.Handle, info *console_cursor_info) (err error) {
r0, _, e1 := syscall.Syscall(proc_get_console_cursor_info.Addr(),
2, uintptr(h), uintptr(unsafe.Pointer(info)), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func set_console_cursor_position(h syscall.Handle, pos coord) (err error) {
r0, _, e1 := syscall.Syscall(proc_set_console_cursor_position.Addr(),
2, uintptr(h), pos.uintptr(), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func read_console_input(h syscall.Handle, record *input_record) (err error) {
r0, _, e1 := syscall.Syscall6(proc_read_console_input.Addr(),
4, uintptr(h), uintptr(unsafe.Pointer(record)), 1, uintptr(unsafe.Pointer(&tmp_arg)), 0, 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func get_console_mode(h syscall.Handle, mode *dword) (err error) {
r0, _, e1 := syscall.Syscall(proc_get_console_mode.Addr(),
2, uintptr(h), uintptr(unsafe.Pointer(mode)), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func set_console_mode(h syscall.Handle, mode dword) (err error) {
r0, _, e1 := syscall.Syscall(proc_set_console_mode.Addr(),
2, uintptr(h), uintptr(mode), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func fill_console_output_character(h syscall.Handle, char wchar, n int) (err error) {
r0, _, e1 := syscall.Syscall6(proc_fill_console_output_character.Addr(),
5, uintptr(h), uintptr(char), uintptr(n), tmp_coord.uintptr(),
uintptr(unsafe.Pointer(&tmp_arg)), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func fill_console_output_attribute(h syscall.Handle, attr word, n int) (err error) {
r0, _, e1 := syscall.Syscall6(proc_fill_console_output_attribute.Addr(),
5, uintptr(h), uintptr(attr), uintptr(n), tmp_coord.uintptr(),
uintptr(unsafe.Pointer(&tmp_arg)), 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func create_event() (out syscall.Handle, err error) {
r0, _, e1 := syscall.Syscall6(proc_create_event.Addr(),
4, 0, 0, 0, 0, 0, 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return syscall.Handle(r0), err
}
func wait_for_multiple_objects(objects []syscall.Handle) (err error) {
r0, _, e1 := syscall.Syscall6(proc_wait_for_multiple_objects.Addr(),
4, uintptr(len(objects)), uintptr(unsafe.Pointer(&objects[0])),
0, 0xFFFFFFFF, 0, 0)
if uint32(r0) == 0xFFFFFFFF {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func set_event(ev syscall.Handle) (err error) {
r0, _, e1 := syscall.Syscall(proc_set_event.Addr(),
1, uintptr(ev), 0, 0)
if int(r0) == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
type diff_msg struct {
pos short
lines short
chars []char_info
}
type input_event struct {
event Event
err error
}
var (
orig_cursor_info console_cursor_info
orig_size coord
orig_mode dword
orig_screen syscall.Handle
back_buffer cellbuf
front_buffer cellbuf
term_size coord
input_mode = InputEsc
cursor_x = cursor_hidden
cursor_y = cursor_hidden
foreground = ColorDefault
background = ColorDefault
in syscall.Handle
out syscall.Handle
interrupt syscall.Handle
charbuf []char_info
diffbuf []diff_msg
beg_x = -1
beg_y = -1
beg_i = -1
input_comm = make(chan Event)
interrupt_comm = make(chan struct{})
cancel_comm = make(chan bool, 1)
cancel_done_comm = make(chan bool)
alt_mode_esc = false
// these ones just to prevent heap allocs at all costs
tmp_info console_screen_buffer_info
tmp_arg dword
tmp_coord0 = coord{0, 0}
tmp_coord = coord{0, 0}
tmp_rect = small_rect{0, 0, 0, 0}
)
func get_cursor_position(out syscall.Handle) coord {
err := get_console_screen_buffer_info(out, &tmp_info)
if err != nil {
panic(err)
}
return tmp_info.cursor_position
}
func get_term_size(out syscall.Handle) coord {
err := get_console_screen_buffer_info(out, &tmp_info)
if err != nil {
panic(err)
}
return tmp_info.size
}
func get_win_size(out syscall.Handle) coord {
err := get_console_screen_buffer_info(out, &tmp_info)
if err != nil {
panic(err)
}
return coord{
x: tmp_info.window.right - tmp_info.window.left + 1,
y: tmp_info.window.bottom - tmp_info.window.top + 1,
}
}
func update_size_maybe() {
size := get_term_size(out)
if size.x != term_size.x || size.y != term_size.y {
term_size = size
back_buffer.resize(int(size.x), int(size.y))
front_buffer.resize(int(size.x), int(size.y))
front_buffer.clear()
clear()
area := int(size.x) * int(size.y)
if cap(charbuf) < area {
charbuf = make([]char_info, 0, area)
}
}
}
var color_table_bg = []word{
0, // default (black)
0, // black
background_red,
background_green,
background_red | background_green, // yellow
background_blue,
background_red | background_blue, // magenta
background_green | background_blue, // cyan
background_red | background_blue | background_green, // white
}
var color_table_fg = []word{
foreground_red | foreground_blue | foreground_green, // default (white)
0,
foreground_red,
foreground_green,
foreground_red | foreground_green, // yellow
foreground_blue,
foreground_red | foreground_blue, // magenta
foreground_green | foreground_blue, // cyan
foreground_red | foreground_blue | foreground_green, // white
}
const (
replacement_char = '\uFFFD'
max_rune = '\U0010FFFF'
surr1 = 0xd800
surr2 = 0xdc00
surr3 = 0xe000
surr_self = 0x10000
)
func append_diff_line(y int) int {
n := 0
for x := 0; x < front_buffer.width; {
cell_offset := y*front_buffer.width + x
back := &back_buffer.cells[cell_offset]
front := &front_buffer.cells[cell_offset]
attr, char := cell_to_char_info(*back)
charbuf = append(charbuf, char_info{attr: attr, char: char[0]})
*front = *back
n++
w := runewidth.RuneWidth(back.Ch)
if w == 0 || w == 2 && runewidth.IsAmbiguousWidth(back.Ch) {
w = 1
}
x += w
// If not CJK, fill trailing space with whitespace
if !is_cjk && w == 2 {
charbuf = append(charbuf, char_info{attr: attr, char: ' '})
}
}
return n
}
// compares 'back_buffer' with 'front_buffer' and prepares all changes in the form of
// 'diff_msg's in the 'diff_buf'
func prepare_diff_messages() {
// clear buffers
diffbuf = diffbuf[:0]
charbuf = charbuf[:0]
var diff diff_msg
gbeg := 0
for y := 0; y < front_buffer.height; y++ {
same := true
line_offset := y * front_buffer.width
for x := 0; x < front_buffer.width; x++ {
cell_offset := line_offset + x
back := &back_buffer.cells[cell_offset]
front := &front_buffer.cells[cell_offset]
if *back != *front {
same = false
break
}
}
if same && diff.lines > 0 {
diffbuf = append(diffbuf, diff)
diff = diff_msg{}
}
if !same {
beg := len(charbuf)
end := beg + append_diff_line(y)
if diff.lines == 0 {
diff.pos = short(y)
gbeg = beg
}
diff.lines++
diff.chars = charbuf[gbeg:end]
}
}
if diff.lines > 0 {
diffbuf = append(diffbuf, diff)
diff = diff_msg{}
}
}
func get_ct(table []word, idx int) word {
idx = idx & 0x0F
if idx >= len(table) {
idx = len(table) - 1
}
return table[idx]
}
func cell_to_char_info(c Cell) (attr word, wc [2]wchar) {
attr = get_ct(color_table_fg, int(c.Fg)) | get_ct(color_table_bg, int(c.Bg))
if c.Fg&AttrReverse|c.Bg&AttrReverse != 0 {
attr = (attr&0xF0)>>4 | (attr&0x0F)<<4
}
if c.Fg&AttrBold != 0 {
attr |= foreground_intensity
}
if c.Bg&AttrBold != 0 {
attr |= background_intensity
}
r0, r1 := utf16.EncodeRune(c.Ch)
if r0 == 0xFFFD {
wc[0] = wchar(c.Ch)
wc[1] = ' '
} else {
wc[0] = wchar(r0)
wc[1] = wchar(r1)
}
return
}
func move_cursor(x, y int) {
err := set_console_cursor_position(out, coord{short(x), short(y)})
if err != nil {
panic(err)
}
}
func show_cursor(visible bool) {
var v int32
if visible {
v = 1
}
var info console_cursor_info
info.size = 100
info.visible = v
err := set_console_cursor_info(out, &info)
if err != nil {
panic(err)
}
}
func clear() {
var err error
attr, char := cell_to_char_info(Cell{
' ',
foreground,
background,
})
area := int(term_size.x) * int(term_size.y)
err = fill_console_output_attribute(out, attr, area)
if err != nil {
panic(err)
}
err = fill_console_output_character(out, char[0], area)
if err != nil {
panic(err)
}
if !is_cursor_hidden(cursor_x, cursor_y) {
move_cursor(cursor_x, cursor_y)
}
}
func key_event_record_to_event(r *key_event_record) (Event, bool) {
if r.key_down == 0 {
return Event{}, false
}
e := Event{Type: EventKey}
if input_mode&InputAlt != 0 {
if alt_mode_esc {
e.Mod = ModAlt
alt_mode_esc = false
}
if r.control_key_state&(left_alt_pressed|right_alt_pressed) != 0 {
e.Mod = ModAlt
}
}
ctrlpressed := r.control_key_state&(left_ctrl_pressed|right_ctrl_pressed) != 0
if r.virtual_key_code >= vk_f1 && r.virtual_key_code <= vk_f12 {
switch r.virtual_key_code {
case vk_f1:
e.Key = KeyF1
case vk_f2:
e.Key = KeyF2
case vk_f3:
e.Key = KeyF3
case vk_f4:
e.Key = KeyF4
case vk_f5:
e.Key = KeyF5
case vk_f6:
e.Key = KeyF6
case vk_f7:
e.Key = KeyF7
case vk_f8:
e.Key = KeyF8
case vk_f9:
e.Key = KeyF9
case vk_f10:
e.Key = KeyF10
case vk_f11:
e.Key = KeyF11
case vk_f12:
e.Key = KeyF12
default:
panic("unreachable")
}
return e, true
}
if r.virtual_key_code <= vk_delete {
switch r.virtual_key_code {
case vk_insert:
e.Key = KeyInsert
case vk_delete:
e.Key = KeyDelete
case vk_home:
e.Key = KeyHome
case vk_end:
e.Key = KeyEnd
case vk_pgup:
e.Key = KeyPgup
case vk_pgdn:
e.Key = KeyPgdn
case vk_arrow_up:
e.Key = KeyArrowUp
case vk_arrow_down:
e.Key = KeyArrowDown
case vk_arrow_left:
e.Key = KeyArrowLeft
case vk_arrow_right:
e.Key = KeyArrowRight
case vk_backspace:
if ctrlpressed {
e.Key = KeyBackspace2
} else {
e.Key = KeyBackspace
}
case vk_tab:
e.Key = KeyTab
case vk_enter:
e.Key = KeyEnter
case vk_esc:
switch {
case input_mode&InputEsc != 0:
e.Key = KeyEsc
case input_mode&InputAlt != 0:
alt_mode_esc = true
return Event{}, false
}
case vk_space:
if ctrlpressed {
// manual return here, because KeyCtrlSpace is zero
e.Key = KeyCtrlSpace
return e, true
} else {
e.Key = KeySpace
}
}
if e.Key != 0 {
return e, true
}
}
if ctrlpressed {
if Key(r.unicode_char) >= KeyCtrlA && Key(r.unicode_char) <= KeyCtrlRsqBracket {
e.Key = Key(r.unicode_char)
if input_mode&InputAlt != 0 && e.Key == KeyEsc {
alt_mode_esc = true
return Event{}, false
}
return e, true
}
switch r.virtual_key_code {
case 192, 50:
// manual return here, because KeyCtrl2 is zero
e.Key = KeyCtrl2
return e, true
case 51:
if input_mode&InputAlt != 0 {
alt_mode_esc = true
return Event{}, false
}
e.Key = KeyCtrl3
case 52:
e.Key = KeyCtrl4
case 53:
e.Key = KeyCtrl5
case 54:
e.Key = KeyCtrl6
case 189, 191, 55:
e.Key = KeyCtrl7
case 8, 56:
e.Key = KeyCtrl8
}
if e.Key != 0 {
return e, true
}
}
if r.unicode_char != 0 {
e.Ch = rune(r.unicode_char)
return e, true
}
return Event{}, false
}
func input_event_producer() {
var r input_record
var err error
var last_button Key
var last_button_pressed Key
var last_state = dword(0)
var last_x, last_y = -1, -1
handles := []syscall.Handle{in, interrupt}
for {
err = wait_for_multiple_objects(handles)
if err != nil {
input_comm <- Event{Type: EventError, Err: err}
}
select {
case <-cancel_comm:
cancel_done_comm <- true
return
default:
}
err = read_console_input(in, &r)
if err != nil {
input_comm <- Event{Type: EventError, Err: err}
}
switch r.event_type {
case key_event:
kr := (*key_event_record)(unsafe.Pointer(&r.event))
ev, ok := key_event_record_to_event(kr)
if ok {
for i := 0; i < int(kr.repeat_count); i++ {
input_comm <- ev
}
}
case window_buffer_size_event:
sr := *(*window_buffer_size_record)(unsafe.Pointer(&r.event))
input_comm <- Event{
Type: EventResize,
Width: int(sr.size.x),
Height: int(sr.size.y),
}
case mouse_event:
mr := *(*mouse_event_record)(unsafe.Pointer(&r.event))
ev := Event{Type: EventMouse}
switch mr.event_flags {
case 0, 2:
// single or double click
cur_state := mr.button_state
switch {
case last_state&mouse_lmb == 0 && cur_state&mouse_lmb != 0:
last_button = MouseLeft
last_button_pressed = last_button
case last_state&mouse_rmb == 0 && cur_state&mouse_rmb != 0:
last_button = MouseRight
last_button_pressed = last_button
case last_state&mouse_mmb == 0 && cur_state&mouse_mmb != 0:
last_button = MouseMiddle
last_button_pressed = last_button
case last_state&mouse_lmb != 0 && cur_state&mouse_lmb == 0:
last_button = MouseRelease
case last_state&mouse_rmb != 0 && cur_state&mouse_rmb == 0:
last_button = MouseRelease
case last_state&mouse_mmb != 0 && cur_state&mouse_mmb == 0:
last_button = MouseRelease
default:
last_state = cur_state
continue
}
last_state = cur_state
ev.Key = last_button
last_x, last_y = int(mr.mouse_pos.x), int(mr.mouse_pos.y)
ev.MouseX = last_x
ev.MouseY = last_y
case 1:
// mouse motion
x, y := int(mr.mouse_pos.x), int(mr.mouse_pos.y)
if last_state != 0 && (last_x != x || last_y != y) {
ev.Key = last_button_pressed
ev.Mod = ModMotion
ev.MouseX = x
ev.MouseY = y
last_x, last_y = x, y
} else {
ev.Type = EventNone
}
case 4:
// mouse wheel
n := int16(mr.button_state >> 16)
if n > 0 {
ev.Key = MouseWheelUp
} else {
ev.Key = MouseWheelDown
}
last_x, last_y = int(mr.mouse_pos.x), int(mr.mouse_pos.y)
ev.MouseX = last_x
ev.MouseY = last_y
default:
ev.Type = EventNone
}
if ev.Type != EventNone {
input_comm <- ev
}
}
}
}

221
vendor/github.com/nsf/termbox-go/terminfo.go generated vendored
View File

@ -1,221 +0,0 @@
// +build !windows
// This file contains a simple and incomplete implementation of the terminfo
// database. Information was taken from the ncurses manpages term(5) and
// terminfo(5). Currently, only the string capabilities for special keys and for
// functions without parameters are actually used. Colors are still done with
// ANSI escape sequences. Other special features that are not (yet?) supported
// are reading from ~/.terminfo, the TERMINFO_DIRS variable, Berkeley database
// format and extended capabilities.
package termbox
import (
"bytes"
"encoding/binary"
"encoding/hex"
"errors"
"fmt"
"io/ioutil"
"os"
"strings"
)
const (
ti_magic = 0432
ti_header_length = 12
ti_mouse_enter = "\x1b[?1000h\x1b[?1002h\x1b[?1015h\x1b[?1006h"
ti_mouse_leave = "\x1b[?1006l\x1b[?1015l\x1b[?1002l\x1b[?1000l"
)
func load_terminfo() ([]byte, error) {
var data []byte
var err error
term := os.Getenv("TERM")
if term == "" {
return nil, fmt.Errorf("termbox: TERM not set")
}
// The following behaviour follows the one described in terminfo(5) as
// distributed by ncurses.
terminfo := os.Getenv("TERMINFO")
if terminfo != "" {
// if TERMINFO is set, no other directory should be searched
return ti_try_path(terminfo)
}
// next, consider ~/.terminfo
home := os.Getenv("HOME")
if home != "" {
data, err = ti_try_path(home + "/.terminfo")
if err == nil {
return data, nil
}
}
// next, TERMINFO_DIRS
dirs := os.Getenv("TERMINFO_DIRS")
if dirs != "" {
for _, dir := range strings.Split(dirs, ":") {
if dir == "" {
// "" -> "/usr/share/terminfo"
dir = "/usr/share/terminfo"
}
data, err = ti_try_path(dir)
if err == nil {
return data, nil
}
}
}
// fall back to /usr/share/terminfo
return ti_try_path("/usr/share/terminfo")
}
func ti_try_path(path string) (data []byte, err error) {
// load_terminfo already made sure it is set
term := os.Getenv("TERM")
// first try, the typical *nix path
terminfo := path + "/" + term[0:1] + "/" + term
data, err = ioutil.ReadFile(terminfo)
if err == nil {
return
}
// fallback to darwin specific dirs structure
terminfo = path + "/" + hex.EncodeToString([]byte(term[:1])) + "/" + term
data, err = ioutil.ReadFile(terminfo)
return
}
func setup_term_builtin() error {
name := os.Getenv("TERM")
if name == "" {
return errors.New("termbox: TERM environment variable not set")
}
for _, t := range terms {
if t.name == name {
keys = t.keys
funcs = t.funcs
return nil
}
}
compat_table := []struct {
partial string
keys []string
funcs []string
}{
{"xterm", xterm_keys, xterm_funcs},
{"rxvt", rxvt_unicode_keys, rxvt_unicode_funcs},
{"linux", linux_keys, linux_funcs},
{"Eterm", eterm_keys, eterm_funcs},
{"screen", screen_keys, screen_funcs},
// let's assume that 'cygwin' is xterm compatible
{"cygwin", xterm_keys, xterm_funcs},
{"st", xterm_keys, xterm_funcs},
}
// try compatibility variants
for _, it := range compat_table {
if strings.Contains(name, it.partial) {
keys = it.keys
funcs = it.funcs
return nil
}
}
return errors.New("termbox: unsupported terminal")
}
func setup_term() (err error) {
var data []byte
var header [6]int16
var str_offset, table_offset int16
data, err = load_terminfo()
if err != nil {
return setup_term_builtin()
}
rd := bytes.NewReader(data)
// 0: magic number, 1: size of names section, 2: size of boolean section, 3:
// size of numbers section (in integers), 4: size of the strings section (in
// integers), 5: size of the string table
err = binary.Read(rd, binary.LittleEndian, header[:])
if err != nil {
return
}
if (header[1]+header[2])%2 != 0 {
// old quirk to align everything on word boundaries
header[2] += 1
}
str_offset = ti_header_length + header[1] + header[2] + 2*header[3]
table_offset = str_offset + 2*header[4]
keys = make([]string, 0xFFFF-key_min)
for i, _ := range keys {
keys[i], err = ti_read_string(rd, str_offset+2*ti_keys[i], table_offset)
if err != nil {
return
}
}
funcs = make([]string, t_max_funcs)
// the last two entries are reserved for mouse. because the table offset is
// not there, the two entries have to fill in manually
for i, _ := range funcs[:len(funcs)-2] {
funcs[i], err = ti_read_string(rd, str_offset+2*ti_funcs[i], table_offset)
if err != nil {
return
}
}
funcs[t_max_funcs-2] = ti_mouse_enter
funcs[t_max_funcs-1] = ti_mouse_leave
return nil
}
func ti_read_string(rd *bytes.Reader, str_off, table int16) (string, error) {
var off int16
_, err := rd.Seek(int64(str_off), 0)
if err != nil {
return "", err
}
err = binary.Read(rd, binary.LittleEndian, &off)
if err != nil {
return "", err
}
_, err = rd.Seek(int64(table+off), 0)
if err != nil {
return "", err
}
var bs []byte
for {
b, err := rd.ReadByte()
if err != nil {
return "", err
}
if b == byte(0x00) {
break
}
bs = append(bs, b)
}
return string(bs), nil
}
// "Maps" the function constants from termbox.go to the number of the respective
// string capability in the terminfo file. Taken from (ncurses) term.h.
var ti_funcs = []int16{
28, 40, 16, 13, 5, 39, 36, 27, 26, 34, 89, 88,
}
// Same as above for the special keys.
var ti_keys = []int16{
66, 68 /* apparently not a typo; 67 is F10 for whatever reason */, 69, 70,
71, 72, 73, 74, 75, 67, 216, 217, 77, 59, 76, 164, 82, 81, 87, 61, 79, 83,
}

64
vendor/github.com/nsf/termbox-go/terminfo_builtin.go generated vendored
View File

@ -1,64 +0,0 @@
// +build !windows
package termbox
// Eterm
var eterm_keys = []string{
"\x1b[11~", "\x1b[12~", "\x1b[13~", "\x1b[14~", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[7~", "\x1b[8~", "\x1b[5~", "\x1b[6~", "\x1b[A", "\x1b[B", "\x1b[D", "\x1b[C",
}
var eterm_funcs = []string{
"\x1b7\x1b[?47h", "\x1b[2J\x1b[?47l\x1b8", "\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[2J", "\x1b[m\x0f", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "", "", "", "",
}
// screen
var screen_keys = []string{
"\x1bOP", "\x1bOQ", "\x1bOR", "\x1bOS", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[1~", "\x1b[4~", "\x1b[5~", "\x1b[6~", "\x1bOA", "\x1bOB", "\x1bOD", "\x1bOC",
}
var screen_funcs = []string{
"\x1b[?1049h", "\x1b[?1049l", "\x1b[34h\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[J", "\x1b[m\x0f", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "\x1b[?1h\x1b=", "\x1b[?1l\x1b>", ti_mouse_enter, ti_mouse_leave,
}
// xterm
var xterm_keys = []string{
"\x1bOP", "\x1bOQ", "\x1bOR", "\x1bOS", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1bOH", "\x1bOF", "\x1b[5~", "\x1b[6~", "\x1bOA", "\x1bOB", "\x1bOD", "\x1bOC",
}
var xterm_funcs = []string{
"\x1b[?1049h", "\x1b[?1049l", "\x1b[?12l\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[2J", "\x1b(B\x1b[m", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "\x1b[?1h\x1b=", "\x1b[?1l\x1b>", ti_mouse_enter, ti_mouse_leave,
}
// rxvt-unicode
var rxvt_unicode_keys = []string{
"\x1b[11~", "\x1b[12~", "\x1b[13~", "\x1b[14~", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[7~", "\x1b[8~", "\x1b[5~", "\x1b[6~", "\x1b[A", "\x1b[B", "\x1b[D", "\x1b[C",
}
var rxvt_unicode_funcs = []string{
"\x1b[?1049h", "\x1b[r\x1b[?1049l", "\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[2J", "\x1b[m\x1b(B", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "\x1b=", "\x1b>", ti_mouse_enter, ti_mouse_leave,
}
// linux
var linux_keys = []string{
"\x1b[[A", "\x1b[[B", "\x1b[[C", "\x1b[[D", "\x1b[[E", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[1~", "\x1b[4~", "\x1b[5~", "\x1b[6~", "\x1b[A", "\x1b[B", "\x1b[D", "\x1b[C",
}
var linux_funcs = []string{
"", "", "\x1b[?25h\x1b[?0c", "\x1b[?25l\x1b[?1c", "\x1b[H\x1b[J", "\x1b[0;10m", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "", "", "", "",
}
// rxvt-256color
var rxvt_256color_keys = []string{
"\x1b[11~", "\x1b[12~", "\x1b[13~", "\x1b[14~", "\x1b[15~", "\x1b[17~", "\x1b[18~", "\x1b[19~", "\x1b[20~", "\x1b[21~", "\x1b[23~", "\x1b[24~", "\x1b[2~", "\x1b[3~", "\x1b[7~", "\x1b[8~", "\x1b[5~", "\x1b[6~", "\x1b[A", "\x1b[B", "\x1b[D", "\x1b[C",
}
var rxvt_256color_funcs = []string{
"\x1b7\x1b[?47h", "\x1b[2J\x1b[?47l\x1b8", "\x1b[?25h", "\x1b[?25l", "\x1b[H\x1b[2J", "\x1b[m\x0f", "\x1b[4m", "\x1b[1m", "\x1b[5m", "\x1b[7m", "\x1b=", "\x1b>", ti_mouse_enter, ti_mouse_leave,
}
var terms = []struct {
name string
keys []string
funcs []string
}{
{"Eterm", eterm_keys, eterm_funcs},
{"screen", screen_keys, screen_funcs},
{"xterm", xterm_keys, xterm_funcs},
{"rxvt-unicode", rxvt_unicode_keys, rxvt_unicode_funcs},
{"linux", linux_keys, linux_funcs},
{"rxvt-256color", rxvt_256color_keys, rxvt_256color_funcs},
}

10
vendor/golang.org/x/net/.gitattributes generated vendored
View File

@ -1,10 +0,0 @@
# Treat all files in this repo as binary, with no git magic updating
# line endings. Windows users contributing to Go will need to use a
# modern version of git and editors capable of LF line endings.
#
# We'll prevent accidental CRLF line endings from entering the repo
# via the git-review gofmt checks.
#
# See golang.org/issue/9281
* -text

2
vendor/golang.org/x/net/.gitignore generated vendored
View File

@ -1,2 +0,0 @@
# Add no patterns to .hgignore except for files generated by the build.
last-change

3
vendor/golang.org/x/net/AUTHORS generated vendored
View File

@ -1,3 +0,0 @@
# This source code refers to The Go Authors for copyright purposes.
# The master list of authors is in the main Go distribution,
# visible at http://tip.golang.org/AUTHORS.

31
vendor/golang.org/x/net/CONTRIBUTING.md generated vendored
View File

@ -1,31 +0,0 @@
# Contributing to Go
Go is an open source project.
It is the work of hundreds of contributors. We appreciate your help!
## Filing issues
When [filing an issue](https://golang.org/issue/new), make sure to answer these five questions:
1. What version of Go are you using (`go version`)?
2. What operating system and processor architecture are you using?
3. What did you do?
4. What did you expect to see?
5. What did you see instead?
General questions should go to the [golang-nuts mailing list](https://groups.google.com/group/golang-nuts) instead of the issue tracker.
The gophers there will answer or ask you to file an issue if you've tripped over a bug.
## Contributing code
Please read the [Contribution Guidelines](https://golang.org/doc/contribute.html)
before sending patches.
**We do not accept GitHub pull requests**
(we use [Gerrit](https://code.google.com/p/gerrit/) instead for code review).
Unless otherwise noted, the Go source files are distributed under
the BSD-style license found in the LICENSE file.

3
vendor/golang.org/x/net/CONTRIBUTORS generated vendored
View File

@ -1,3 +0,0 @@
# This source code was written by the Go contributors.
# The master list of contributors is in the main Go distribution,
# visible at http://tip.golang.org/CONTRIBUTORS.

3
vendor/golang.org/x/net/README generated vendored
View File

@ -1,3 +0,0 @@
This repository holds supplementary Go networking libraries.
To submit changes to this repository, see http://golang.org/doc/contribute.html.

1
vendor/golang.org/x/net/codereview.cfg generated vendored
View File

@ -1 +0,0 @@
issuerepo: golang/go

104
vendor/golang.org/x/net/context/context.go generated vendored
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@ -5,6 +5,8 @@
// Package context defines the Context type, which carries deadlines, // Package context defines the Context type, which carries deadlines,
// cancelation signals, and other request-scoped values across API boundaries // cancelation signals, and other request-scoped values across API boundaries
// and between processes. // and between processes.
// As of Go 1.7 this package is available in the standard library under the
// name context. https://golang.org/pkg/context.
// //
// Incoming requests to a server should create a Context, and outgoing calls to // Incoming requests to a server should create a Context, and outgoing calls to
// servers should accept a Context. The chain of function calls between must // servers should accept a Context. The chain of function calls between must
@ -36,103 +38,6 @@
// Contexts. // Contexts.
package context // import "golang.org/x/net/context" package context // import "golang.org/x/net/context"
import "time"
// A Context carries a deadline, a cancelation signal, and other values across
// API boundaries.
//
// Context's methods may be called by multiple goroutines simultaneously.
type Context interface {
// Deadline returns the time when work done on behalf of this context
// should be canceled. Deadline returns ok==false when no deadline is
// set. Successive calls to Deadline return the same results.
Deadline() (deadline time.Time, ok bool)
// Done returns a channel that's closed when work done on behalf of this
// context should be canceled. Done may return nil if this context can
// never be canceled. Successive calls to Done return the same value.
//
// WithCancel arranges for Done to be closed when cancel is called;
// WithDeadline arranges for Done to be closed when the deadline
// expires; WithTimeout arranges for Done to be closed when the timeout
// elapses.
//
// Done is provided for use in select statements:
//
// // Stream generates values with DoSomething and sends them to out
// // until DoSomething returns an error or ctx.Done is closed.
// func Stream(ctx context.Context, out chan<- Value) error {
// for {
// v, err := DoSomething(ctx)
// if err != nil {
// return err
// }
// select {
// case <-ctx.Done():
// return ctx.Err()
// case out <- v:
// }
// }
// }
//
// See http://blog.golang.org/pipelines for more examples of how to use
// a Done channel for cancelation.
Done() <-chan struct{}
// Err returns a non-nil error value after Done is closed. Err returns
// Canceled if the context was canceled or DeadlineExceeded if the
// context's deadline passed. No other values for Err are defined.
// After Done is closed, successive calls to Err return the same value.
Err() error
// Value returns the value associated with this context for key, or nil
// if no value is associated with key. Successive calls to Value with
// the same key returns the same result.
//
// Use context values only for request-scoped data that transits
// processes and API boundaries, not for passing optional parameters to
// functions.
//
// A key identifies a specific value in a Context. Functions that wish
// to store values in Context typically allocate a key in a global
// variable then use that key as the argument to context.WithValue and
// Context.Value. A key can be any type that supports equality;
// packages should define keys as an unexported type to avoid
// collisions.
//
// Packages that define a Context key should provide type-safe accessors
// for the values stores using that key:
//
// // Package user defines a User type that's stored in Contexts.
// package user
//
// import "golang.org/x/net/context"
//
// // User is the type of value stored in the Contexts.
// type User struct {...}
//
// // key is an unexported type for keys defined in this package.
// // This prevents collisions with keys defined in other packages.
// type key int
//
// // userKey is the key for user.User values in Contexts. It is
// // unexported; clients use user.NewContext and user.FromContext
// // instead of using this key directly.
// var userKey key = 0
//
// // NewContext returns a new Context that carries value u.
// func NewContext(ctx context.Context, u *User) context.Context {
// return context.WithValue(ctx, userKey, u)
// }
//
// // FromContext returns the User value stored in ctx, if any.
// func FromContext(ctx context.Context) (*User, bool) {
// u, ok := ctx.Value(userKey).(*User)
// return u, ok
// }
Value(key interface{}) interface{}
}
// Background returns a non-nil, empty Context. It is never canceled, has no // Background returns a non-nil, empty Context. It is never canceled, has no
// values, and has no deadline. It is typically used by the main function, // values, and has no deadline. It is typically used by the main function,
// initialization, and tests, and as the top-level Context for incoming // initialization, and tests, and as the top-level Context for incoming
@ -149,8 +54,3 @@ func Background() Context {
func TODO() Context { func TODO() Context {
return todo return todo
} }
// A CancelFunc tells an operation to abandon its work.
// A CancelFunc does not wait for the work to stop.
// After the first call, subsequent calls to a CancelFunc do nothing.
type CancelFunc func()

20
vendor/golang.org/x/net/context/go19.go generated vendored Normal file
View File

@ -0,0 +1,20 @@
// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build go1.9
package context
import "context" // standard library's context, as of Go 1.7
// A Context carries a deadline, a cancelation signal, and other values across
// API boundaries.
//
// Context's methods may be called by multiple goroutines simultaneously.
type Context = context.Context
// A CancelFunc tells an operation to abandon its work.
// A CancelFunc does not wait for the work to stop.
// After the first call, subsequent calls to a CancelFunc do nothing.
type CancelFunc = context.CancelFunc

109
vendor/golang.org/x/net/context/pre_go19.go generated vendored Normal file
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@ -0,0 +1,109 @@
// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !go1.9
package context
import "time"
// A Context carries a deadline, a cancelation signal, and other values across
// API boundaries.
//
// Context's methods may be called by multiple goroutines simultaneously.
type Context interface {
// Deadline returns the time when work done on behalf of this context
// should be canceled. Deadline returns ok==false when no deadline is
// set. Successive calls to Deadline return the same results.
Deadline() (deadline time.Time, ok bool)
// Done returns a channel that's closed when work done on behalf of this
// context should be canceled. Done may return nil if this context can
// never be canceled. Successive calls to Done return the same value.
//
// WithCancel arranges for Done to be closed when cancel is called;
// WithDeadline arranges for Done to be closed when the deadline
// expires; WithTimeout arranges for Done to be closed when the timeout
// elapses.
//
// Done is provided for use in select statements:
//
// // Stream generates values with DoSomething and sends them to out
// // until DoSomething returns an error or ctx.Done is closed.
// func Stream(ctx context.Context, out chan<- Value) error {
// for {
// v, err := DoSomething(ctx)
// if err != nil {
// return err
// }
// select {
// case <-ctx.Done():
// return ctx.Err()
// case out <- v:
// }
// }
// }
//
// See http://blog.golang.org/pipelines for more examples of how to use
// a Done channel for cancelation.
Done() <-chan struct{}
// Err returns a non-nil error value after Done is closed. Err returns
// Canceled if the context was canceled or DeadlineExceeded if the
// context's deadline passed. No other values for Err are defined.
// After Done is closed, successive calls to Err return the same value.
Err() error
// Value returns the value associated with this context for key, or nil
// if no value is associated with key. Successive calls to Value with
// the same key returns the same result.
//
// Use context values only for request-scoped data that transits
// processes and API boundaries, not for passing optional parameters to
// functions.
//
// A key identifies a specific value in a Context. Functions that wish
// to store values in Context typically allocate a key in a global
// variable then use that key as the argument to context.WithValue and
// Context.Value. A key can be any type that supports equality;
// packages should define keys as an unexported type to avoid
// collisions.
//
// Packages that define a Context key should provide type-safe accessors
// for the values stores using that key:
//
// // Package user defines a User type that's stored in Contexts.
// package user
//
// import "golang.org/x/net/context"
//
// // User is the type of value stored in the Contexts.
// type User struct {...}
//
// // key is an unexported type for keys defined in this package.
// // This prevents collisions with keys defined in other packages.
// type key int
//
// // userKey is the key for user.User values in Contexts. It is
// // unexported; clients use user.NewContext and user.FromContext
// // instead of using this key directly.
// var userKey key = 0
//
// // NewContext returns a new Context that carries value u.
// func NewContext(ctx context.Context, u *User) context.Context {
// return context.WithValue(ctx, userKey, u)
// }
//
// // FromContext returns the User value stored in ctx, if any.
// func FromContext(ctx context.Context) (*User, bool) {
// u, ok := ctx.Value(userKey).(*User)
// return u, ok
// }
Value(key interface{}) interface{}
}
// A CancelFunc tells an operation to abandon its work.
// A CancelFunc does not wait for the work to stop.
// After the first call, subsequent calls to a CancelFunc do nothing.
type CancelFunc func()

648
vendor/golang.org/x/net/html/atom/gen.go generated vendored
View File

@ -1,648 +0,0 @@
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build ignore
package main
// This program generates table.go and table_test.go.
// Invoke as
//
// go run gen.go |gofmt >table.go
// go run gen.go -test |gofmt >table_test.go
import (
"flag"
"fmt"
"math/rand"
"os"
"sort"
"strings"
)
// identifier converts s to a Go exported identifier.
// It converts "div" to "Div" and "accept-charset" to "AcceptCharset".
func identifier(s string) string {
b := make([]byte, 0, len(s))
cap := true
for _, c := range s {
if c == '-' {
cap = true
continue
}
if cap && 'a' <= c && c <= 'z' {
c -= 'a' - 'A'
}
cap = false
b = append(b, byte(c))
}
return string(b)
}
var test = flag.Bool("test", false, "generate table_test.go")
func main() {
flag.Parse()
var all []string
all = append(all, elements...)
all = append(all, attributes...)
all = append(all, eventHandlers...)
all = append(all, extra...)
sort.Strings(all)
if *test {
fmt.Printf("// generated by go run gen.go -test; DO NOT EDIT\n\n")
fmt.Printf("package atom\n\n")
fmt.Printf("var testAtomList = []string{\n")
for _, s := range all {
fmt.Printf("\t%q,\n", s)
}
fmt.Printf("}\n")
return
}
// uniq - lists have dups
// compute max len too
maxLen := 0
w := 0
for _, s := range all {
if w == 0 || all[w-1] != s {
if maxLen < len(s) {
maxLen = len(s)
}
all[w] = s
w++
}
}
all = all[:w]
// Find hash that minimizes table size.
var best *table
for i := 0; i < 1000000; i++ {
if best != nil && 1<<(best.k-1) < len(all) {
break
}
h := rand.Uint32()
for k := uint(0); k <= 16; k++ {
if best != nil && k >= best.k {
break
}
var t table
if t.init(h, k, all) {
best = &t
break
}
}
}
if best == nil {
fmt.Fprintf(os.Stderr, "failed to construct string table\n")
os.Exit(1)
}
// Lay out strings, using overlaps when possible.
layout := append([]string{}, all...)
// Remove strings that are substrings of other strings
for changed := true; changed; {
changed = false
for i, s := range layout {
if s == "" {
continue
}
for j, t := range layout {
if i != j && t != "" && strings.Contains(s, t) {
changed = true
layout[j] = ""
}
}
}
}
// Join strings where one suffix matches another prefix.
for {
// Find best i, j, k such that layout[i][len-k:] == layout[j][:k],
// maximizing overlap length k.
besti := -1
bestj := -1
bestk := 0
for i, s := range layout {
if s == "" {
continue
}
for j, t := range layout {
if i == j {
continue
}
for k := bestk + 1; k <= len(s) && k <= len(t); k++ {
if s[len(s)-k:] == t[:k] {
besti = i
bestj = j
bestk = k
}
}
}
}
if bestk > 0 {
layout[besti] += layout[bestj][bestk:]
layout[bestj] = ""
continue
}
break
}
text := strings.Join(layout, "")
atom := map[string]uint32{}
for _, s := range all {
off := strings.Index(text, s)
if off < 0 {
panic("lost string " + s)
}
atom[s] = uint32(off<<8 | len(s))
}
// Generate the Go code.
fmt.Printf("// generated by go run gen.go; DO NOT EDIT\n\n")
fmt.Printf("package atom\n\nconst (\n")
for _, s := range all {
fmt.Printf("\t%s Atom = %#x\n", identifier(s), atom[s])
}
fmt.Printf(")\n\n")
fmt.Printf("const hash0 = %#x\n\n", best.h0)
fmt.Printf("const maxAtomLen = %d\n\n", maxLen)
fmt.Printf("var table = [1<<%d]Atom{\n", best.k)
for i, s := range best.tab {
if s == "" {
continue
}
fmt.Printf("\t%#x: %#x, // %s\n", i, atom[s], s)
}
fmt.Printf("}\n")
datasize := (1 << best.k) * 4
fmt.Printf("const atomText =\n")
textsize := len(text)
for len(text) > 60 {
fmt.Printf("\t%q +\n", text[:60])
text = text[60:]
}
fmt.Printf("\t%q\n\n", text)
fmt.Fprintf(os.Stderr, "%d atoms; %d string bytes + %d tables = %d total data\n", len(all), textsize, datasize, textsize+datasize)
}
type byLen []string
func (x byLen) Less(i, j int) bool { return len(x[i]) > len(x[j]) }
func (x byLen) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
func (x byLen) Len() int { return len(x) }
// fnv computes the FNV hash with an arbitrary starting value h.
func fnv(h uint32, s string) uint32 {
for i := 0; i < len(s); i++ {
h ^= uint32(s[i])
h *= 16777619
}
return h
}
// A table represents an attempt at constructing the lookup table.
// The lookup table uses cuckoo hashing, meaning that each string
// can be found in one of two positions.
type table struct {
h0 uint32
k uint
mask uint32
tab []string
}
// hash returns the two hashes for s.
func (t *table) hash(s string) (h1, h2 uint32) {
h := fnv(t.h0, s)
h1 = h & t.mask
h2 = (h >> 16) & t.mask
return
}
// init initializes the table with the given parameters.
// h0 is the initial hash value,
// k is the number of bits of hash value to use, and
// x is the list of strings to store in the table.
// init returns false if the table cannot be constructed.
func (t *table) init(h0 uint32, k uint, x []string) bool {
t.h0 = h0
t.k = k
t.tab = make([]string, 1<<k)
t.mask = 1<<k - 1
for _, s := range x {
if !t.insert(s) {
return false
}
}
return true
}
// insert inserts s in the table.
func (t *table) insert(s string) bool {
h1, h2 := t.hash(s)
if t.tab[h1] == "" {
t.tab[h1] = s
return true
}
if t.tab[h2] == "" {
t.tab[h2] = s
return true
}
if t.push(h1, 0) {
t.tab[h1] = s
return true
}
if t.push(h2, 0) {
t.tab[h2] = s
return true
}
return false
}
// push attempts to push aside the entry in slot i.
func (t *table) push(i uint32, depth int) bool {
if depth > len(t.tab) {
return false
}
s := t.tab[i]
h1, h2 := t.hash(s)
j := h1 + h2 - i
if t.tab[j] != "" && !t.push(j, depth+1) {
return false
}
t.tab[j] = s
return true
}
// The lists of element names and attribute keys were taken from
// https://html.spec.whatwg.org/multipage/indices.html#index
// as of the "HTML Living Standard - Last Updated 21 February 2015" version.
var elements = []string{
"a",
"abbr",
"address",
"area",
"article",
"aside",
"audio",
"b",
"base",
"bdi",
"bdo",
"blockquote",
"body",
"br",
"button",
"canvas",
"caption",
"cite",
"code",
"col",
"colgroup",
"command",
"data",
"datalist",
"dd",
"del",
"details",
"dfn",
"dialog",
"div",
"dl",
"dt",
"em",
"embed",
"fieldset",
"figcaption",
"figure",
"footer",
"form",
"h1",
"h2",
"h3",
"h4",
"h5",
"h6",
"head",
"header",
"hgroup",
"hr",
"html",
"i",
"iframe",
"img",
"input",
"ins",
"kbd",
"keygen",
"label",
"legend",
"li",
"link",
"map",
"mark",
"menu",
"menuitem",
"meta",
"meter",
"nav",
"noscript",
"object",
"ol",
"optgroup",
"option",
"output",
"p",
"param",
"pre",
"progress",
"q",
"rp",
"rt",
"ruby",
"s",
"samp",
"script",
"section",
"select",
"small",
"source",
"span",
"strong",
"style",
"sub",
"summary",
"sup",
"table",
"tbody",
"td",
"template",
"textarea",
"tfoot",
"th",
"thead",
"time",
"title",
"tr",
"track",
"u",
"ul",
"var",
"video",
"wbr",
}
// https://html.spec.whatwg.org/multipage/indices.html#attributes-3
var attributes = []string{
"abbr",
"accept",
"accept-charset",
"accesskey",
"action",
"alt",
"async",
"autocomplete",
"autofocus",
"autoplay",
"challenge",
"charset",
"checked",
"cite",
"class",
"cols",
"colspan",
"command",
"content",
"contenteditable",
"contextmenu",
"controls",
"coords",
"crossorigin",
"data",
"datetime",
"default",
"defer",
"dir",
"dirname",
"disabled",
"download",
"draggable",
"dropzone",
"enctype",
"for",
"form",
"formaction",
"formenctype",
"formmethod",
"formnovalidate",
"formtarget",
"headers",
"height",
"hidden",
"high",
"href",
"hreflang",
"http-equiv",
"icon",
"id",
"inputmode",
"ismap",
"itemid",
"itemprop",
"itemref",
"itemscope",
"itemtype",
"keytype",
"kind",
"label",
"lang",
"list",
"loop",
"low",
"manifest",
"max",
"maxlength",
"media",
"mediagroup",
"method",
"min",
"minlength",
"multiple",
"muted",
"name",
"novalidate",
"open",
"optimum",
"pattern",
"ping",
"placeholder",
"poster",
"preload",
"radiogroup",
"readonly",
"rel",
"required",
"reversed",
"rows",
"rowspan",
"sandbox",
"spellcheck",
"scope",
"scoped",
"seamless",
"selected",
"shape",
"size",
"sizes",
"sortable",
"sorted",
"span",
"src",
"srcdoc",
"srclang",
"start",
"step",
"style",
"tabindex",
"target",
"title",
"translate",
"type",
"typemustmatch",
"usemap",
"value",
"width",
"wrap",
}
var eventHandlers = []string{
"onabort",
"onautocomplete",
"onautocompleteerror",
"onafterprint",
"onbeforeprint",
"onbeforeunload",
"onblur",
"oncancel",
"oncanplay",
"oncanplaythrough",
"onchange",
"onclick",
"onclose",
"oncontextmenu",
"oncuechange",
"ondblclick",
"ondrag",
"ondragend",
"ondragenter",
"ondragleave",
"ondragover",
"ondragstart",
"ondrop",
"ondurationchange",
"onemptied",
"onended",
"onerror",
"onfocus",
"onhashchange",
"oninput",
"oninvalid",
"onkeydown",
"onkeypress",
"onkeyup",
"onlanguagechange",
"onload",
"onloadeddata",
"onloadedmetadata",
"onloadstart",
"onmessage",
"onmousedown",
"onmousemove",
"onmouseout",
"onmouseover",
"onmouseup",
"onmousewheel",
"onoffline",
"ononline",
"onpagehide",
"onpageshow",
"onpause",
"onplay",
"onplaying",
"onpopstate",
"onprogress",
"onratechange",
"onreset",
"onresize",
"onscroll",
"onseeked",
"onseeking",
"onselect",
"onshow",
"onsort",
"onstalled",
"onstorage",
"onsubmit",
"onsuspend",
"ontimeupdate",
"ontoggle",
"onunload",
"onvolumechange",
"onwaiting",
}
// extra are ad-hoc values not covered by any of the lists above.
var extra = []string{
"align",
"annotation",
"annotation-xml",
"applet",
"basefont",
"bgsound",
"big",
"blink",
"center",
"color",
"desc",
"face",
"font",
"foreignObject", // HTML is case-insensitive, but SVG-embedded-in-HTML is case-sensitive.
"foreignobject",
"frame",
"frameset",
"image",
"isindex",
"listing",
"malignmark",
"marquee",
"math",
"mglyph",
"mi",
"mn",
"mo",
"ms",
"mtext",
"nobr",
"noembed",
"noframes",
"plaintext",
"prompt",
"public",
"spacer",
"strike",
"svg",
"system",
"tt",
"xmp",
}

1456
vendor/golang.org/x/net/html/atom/table.go generated vendored
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16
vendor/golang.org/x/net/html/const.go generated vendored
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@ -4,7 +4,7 @@
package html package html
// Section 12.2.3.2 of the HTML5 specification says "The following elements // Section 12.2.4.2 of the HTML5 specification says "The following elements
// have varying levels of special parsing rules". // have varying levels of special parsing rules".
// https://html.spec.whatwg.org/multipage/syntax.html#the-stack-of-open-elements // https://html.spec.whatwg.org/multipage/syntax.html#the-stack-of-open-elements
var isSpecialElementMap = map[string]bool{ var isSpecialElementMap = map[string]bool{
@ -52,10 +52,12 @@ var isSpecialElementMap = map[string]bool{
"iframe": true, "iframe": true,
"img": true, "img": true,
"input": true, "input": true,
"isindex": true, "isindex": true, // The 'isindex' element has been removed, but keep it for backwards compatibility.
"keygen": true,
"li": true, "li": true,
"link": true, "link": true,
"listing": true, "listing": true,
"main": true,
"marquee": true, "marquee": true,
"menu": true, "menu": true,
"meta": true, "meta": true,
@ -95,8 +97,16 @@ func isSpecialElement(element *Node) bool {
switch element.Namespace { switch element.Namespace {
case "", "html": case "", "html":
return isSpecialElementMap[element.Data] return isSpecialElementMap[element.Data]
case "math":
switch element.Data {
case "mi", "mo", "mn", "ms", "mtext", "annotation-xml":
return true
}
case "svg": case "svg":
return element.Data == "foreignObject" switch element.Data {
case "foreignObject", "desc", "title":
return true
}
} }
return false return false
} }

8
vendor/golang.org/x/net/html/doc.go generated vendored
View File

@ -49,18 +49,18 @@ call to Next. For example, to extract an HTML page's anchor text:
for { for {
tt := z.Next() tt := z.Next()
switch tt { switch tt {
case ErrorToken: case html.ErrorToken:
return z.Err() return z.Err()
case TextToken: case html.TextToken:
if depth > 0 { if depth > 0 {
// emitBytes should copy the []byte it receives, // emitBytes should copy the []byte it receives,
// if it doesn't process it immediately. // if it doesn't process it immediately.
emitBytes(z.Text()) emitBytes(z.Text())
} }
case StartTagToken, EndTagToken: case html.StartTagToken, html.EndTagToken:
tn, _ := z.TagName() tn, _ := z.TagName()
if len(tn) == 1 && tn[0] == 'a' { if len(tn) == 1 && tn[0] == 'a' {
if tt == StartTagToken { if tt == html.StartTagToken {
depth++ depth++
} else { } else {
depth-- depth--

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